View source for Simple windowed application

{{task|GUI}}[[Category:Basic language learning]]{{requires|Graphics}} [[Category:Simple]]

;Task:
Create a window that has:
::# &nbsp; a label that says &nbsp; "There have been no clicks yet" 
::# &nbsp; a button that says &nbsp; "click me"


Upon clicking the button with the mouse, the label should change and show the number of times the button has been clicked.
<br><br>
=={{header|AArch64 Assembly}}==
{{works with|as|Raspberry Pi 3B version Buster 64 bits}}
<syntaxhighlight lang="aarch64 assembly">
/* ARM assembly AARCH64 Raspberry PI 3B */
/*  program simpleWin64.s   link with X11 library */

/*******************************************/
/* Constantes file                         */
/*******************************************/
/* for this file see task include a file in language AArch64 assembly*/
.include "../includeConstantesARM64.inc"

/* constantes X11 */
.equ KeyPressed,    2
.equ ButtonPress,   4
.equ ClientMessage, 33
.equ KeyPressMask,  1
.equ ButtonPressMask,     4
.equ ButtonReleaseMask,   8
.equ ExposureMask,        1<<15
.equ StructureNotifyMask, 1<<17
.equ EnterWindowMask,     1<<4
.equ LeaveWindowMask,     1<<5 

/*******************************************/
/* Structures                              */
/********************************************/
/* Button structure */
    .struct  0
BT_cbdata:
    .struct BT_cbdata  + 8
BT_adresse:
    .struct BT_adresse + 8
BT_GC:
    .struct BT_GC + 8
BT_Font:
    .struct BT_Font + 8
BT_fin:
/***************************************************/
/* structure XButtonEvent    */
    .struct  0
XBE_type:                          //event type
    .struct XBE_type + 8
XBE_serial:                       // No  last request processed  server */ 
    .struct XBE_serial + 8 
XBE_send_event:                   // true if this came from a SendEvent request */ 
    .struct XBE_send_event + 8     
XBE_display:                      // Display the event was read from
    .struct XBE_display + 8      
XBE_window:                       // "event" window it is reported relative to
    .struct XBE_window + 8  
XBE_root:                         // root window that the event occurred on
    .struct XBE_root + 8  
XBE_subwindow:                    // child window
    .struct XBE_subwindow + 8  
XBE_time:                         // milliseconds
    .struct XBE_time + 8      
XBE_x:                            // pointer x, y coordinates in event window
    .struct XBE_x + 8
XBE_y:              
    .struct XBE_y + 8
XBE_x_root:                       // coordinates relative to root
    .struct XBE_x_root + 8
XBE_y_root:              
    .struct XBE_y_root + 8    
XBE_state:                        // key or button mask
    .struct XBE_state + 8
XBE_button:                       // detail
    .struct XBE_button + 8    
XBE_same_screen:                  // same screen flag
    .struct XBE_same_screen + 8
XBE_fin:
/*******************************************/
/* Initialized data                        */
/*******************************************/ 
.data
szRetourligne:      .asciz  "\n"
szMessErreur:       .asciz "Server X11 not found.\n"
szMessErrfen:       .asciz "Error create X11 window.\n"
szMessErrGC:        .asciz "Error create Graphic Context.\n"
szMessErrButton:    .asciz "Error create button.\n"
szMessErrButtonGC:  .asciz "Error create button Graphic Context.\n"
szMessGoodBye:      .asciz "There have been no clicks yet"

szTextButton:       .asciz "Click me"
szMessResult:       .asciz "You clicked me @ times       "

szLibDW:            .asciz "WM_DELETE_WINDOW"      // message close window

/*******************************************/
/* UnInitialized data                      */
/*******************************************/ 
.bss
.align 4
qDisplay:        .skip 8           // Display address
qDefScreen:      .skip 8           // Default screen address
identWin:        .skip 8           // window ident
qCounterClic:    .skip 8           // counter clic button
sZoneConv:       .skip 24
wmDeleteMessage: .skip 16          // ident close message
stEvent:         .skip 400         // provisional size

stButton:        .skip BT_fin
buffer:          .skip 500 

/**********************************************/
/* -- Code section                            */
/**********************************************/
.text           
.global main                   // program entry
main:
    mov x0,#0                  // open server X
    bl XOpenDisplay
    cmp x0,#0
    beq erreur
                               //  Ok return Display address
    ldr x1,qAdrqDisplay
    str x0,[x1]                // store Display address for future use
    mov x28,x0                 // and in register 28
                               // load default screen
    ldr x2,[x0,#264]           // at location 264
    ldr x1,qAdrqDefScreen
    str x2,[x1]                //store default_screen
    mov x2,x0
    ldr x0,[x2,#232]           // screen list

                               //screen areas
    ldr x5,[x0,#+88]           // white pixel
    ldr x3,[x0,#+96]           // black pixel
    ldr x4,[x0,#+56]           // bits par pixel
    ldr x1,[x0,#+16]           // root windows
                               // create window x11
    mov x0,x28                 //display
    mov x2,#0                  // position X 
    mov x3,#0                  // position Y
    mov x4,600                 // weight
    mov x5,400                 // height
    mov x6,0                   // bordure ???
    ldr x7,0                   // ?
    ldr x8,qBlanc              // background
    str x8,[sp,-16]!           // argument fot stack
    bl XCreateSimpleWindow
    add sp,sp,16               // for stack alignement
    cmp x0,#0                  // error ?
    beq erreurF
    ldr x1,qAdridentWin
    str x0,[x1]                // store window ident for future use
    mov x27,x0                 // and in register 27

                               // Correction of window closing error
    mov x0,x28                 // Display address
    ldr x1,qAdrszLibDW         // atom name address
    mov x2,#1                  // False  create atom if not exist
    bl XInternAtom
    cmp x0,#0
    ble erreurF
    ldr x1,qAdrwmDeleteMessage // address message
    str x0,[x1]
    mov x2,x1                  // address atom create
    mov x0,x28                 // display address
    mov x1,x27                 // window ident
    mov x3,#1                  // number of protocoles 
    bl XSetWMProtocols
    cmp x0,#0
    ble erreurF
                               // authorization of seizures
    mov x0,x28                 // display address
    mov x1,x27                 // window ident
    ldr x2,qFenetreMask        // mask 
    bl XSelectInput
    cmp x0,#0
    ble 99f
                               // create Graphic Context
    mov x0,x28                 // display address
    mov x1,x27                 // window ident
    bl createGC                // GC address -> x26
    cbz x0,erreurF
                               // create Graphic Context 1
    mov x0,x28                 // display address
    mov x1,x27                 // window ident
    bl createGC1                // GC address -> x25
    cbz x0,erreurF
                               // Display window
    mov x1,x27                 // ident window
    mov x0,x28                 // Display address
    bl XMapWindow

    ldr x0,qAdrszMessGoodBye   // display text
    bl displayText

    bl createButton            // create button on screen
1:                             // events loop
    mov x0,x28                 // Display address
    ldr x1,qAdrstEvent         // events structure address
    bl XNextEvent
    ldr x0,qAdrstEvent         // events structure address
    ldr w0,[x0]                // type in 4 first bytes
    cmp w0,#ClientMessage      // message for close window 
    beq 2f                     // yes -> end
    cmp w0,#ButtonPress        // clic mouse button
    beq 3f
                               // other events
    b 1b                       // and loop
2:
    ldr x0,qAdrstEvent         // events structure address
    ldr x1,[x0,56]             // location message code
    ldr x2,qAdrwmDeleteMessage // equal ?
    ldr x2,[x2]
    cmp x1,x2
    bne 1b                     // no loop 
    mov x0,0                   // end Ok
    b 100f
    //TODO: close ??

3:
    ldr x0,qAdrstEvent         // events structure address
    bl evtButtonMouse
    b 1b

erreurF:                       // error create window
    ldr x0,qAdrszMessErrfen
    bl affichageMess
    mov x0,1
    b 100f
erreur:                        // error no server x11 active
    ldr x0,qAdrszMessErreur
    bl affichageMess
    mov x0,1
100:                           // program standard end
    mov x8,EXIT
    svc 0 
qBlanc:              .quad 0xF0F0F0F0
qAdrqDisplay:        .quad qDisplay
qAdrqDefScreen:      .quad qDefScreen
qAdridentWin:        .quad identWin
qAdrstEvent:         .quad stEvent
qAdrszMessErrfen:    .quad szMessErrfen
qAdrszMessErreur:    .quad szMessErreur
qAdrwmDeleteMessage: .quad wmDeleteMessage
qAdrszLibDW:         .quad szLibDW
qAdrszMessGoodBye:   .quad szMessGoodBye
qFenetreMask:        .quad  KeyPressMask|ButtonPressMask|StructureNotifyMask|ExposureMask|EnterWindowMask
/******************************************************************/
/*     create Graphic Context                                     */ 
/******************************************************************/
/* x0 contains the Display address */
/* x1 contains the ident Window */
createGC:
    stp x20,lr,[sp,-16]!       // save  registers
    mov x20,x0                 // save display address
    mov x2,#0
    mov x3,#0
    bl XCreateGC
    cbz x0,99f
    mov x26,x0                 // save GC
    mov x0,x20                 // display address
    mov x1,x26
    ldr x2,qRed                // code RGB color
    bl XSetForeground
    cbz x0,99f
    mov x0,x26                 // return GC
    b 100f
99:
    ldr x0,qAdrszMessErrGC
    bl affichageMess
    mov x0,0
100:
    ldp x20,lr,[sp],16         // restaur  2 registers
    ret                        // return to address lr x30
qAdrszMessErrGC:             .quad szMessErrGC
qRed:                        .quad 0xFF0000
qGreen:                      .quad 0xFF00
qBlue:                       .quad 0xFF
qBlack:                      .quad 0x0
/******************************************************************/
/*     create Graphic Context 1                                    */ 
/******************************************************************/
/* x0 contains the Display address */
/* x1 contains the ident Window */
createGC1:
    stp x20,lr,[sp,-16]!       // save  registers
    mov x20,x0                 // save display address
    mov x2,#0
    mov x3,#0
    bl XCreateGC
    cbz x0,99f
    mov x25,x0                 // save GC
    mov x0,x20                 // display address
    mov x1,x25
    ldr x2,qBlanc              // code RGB color
    bl XSetForeground
    cbz x0,99f
    mov x0,x25                 // return GC1
    b 100f
99:
    ldr x0,qAdrszMessErrGC
    bl affichageMess
    mov x0,0
100:
    ldp x20,lr,[sp],16         // restaur  2 registers
    ret                        // return to address lr x30
/******************************************************************/
/*     create button on screen                                     */ 
/******************************************************************/
createButton:
    stp x21,lr,[sp,-16]!       // save  registers
                               // create button window
    mov x0,x28                 // display address
    mov x1,x27                 // ident window
    mov x2,80                 // X position
    mov x3,150                 // Y position
    mov x4,60                  // weight
    mov x5,30                  // height
    mov x6,2                   // border
    ldr x7,qBlack
    ldr x8,qBlanc              // background
    str x8,[sp,-16]!           // argument fot stack
    bl XCreateSimpleWindow
    add sp,sp,16               // for stack alignement
    cmp x0,#0                  // error ?
    beq 99f
    ldr x21,qAdrstButton
    str x0,[x21,BT_adresse]    // save ident button
    str xzr,[x21,BT_cbdata]    // for next use

                              // autorisation des saisies
    mov x0,x28                // display address
    ldr x1,[x21,BT_adresse]   // button address
    ldr x2,qButtonMask        // mask
    bl XSelectInput
                              // create Graphic Contexte of button
    mov x0,x28                // display address
    ldr x1,[x21,BT_adresse]   // button ident
    mov x2,#0
    mov x3,#0
    bl XCreateGC
    cmp x0,#0
    beq 98f
    str x0,[x21,BT_GC]        // store GC
                              // display button
    mov x0,x28                // display address
    ldr x1,[x21,BT_adresse]   // button address
    bl XMapWindow
    ldr x5,qAdrszTextButton   // text address
    mov x6,0                  // text size
1:                            // loop compute text size
    ldrb w10,[x5,x6]          // load text byte
    cbz x10,2f                // zero -> end
    add x6,x6,1               // increment size
    b 1b                      // and loop
2:
    mov x0,x28                // display address
    ldr x1,[x21,BT_adresse]   // button address
    ldr x2,[x21,BT_GC]        // GC address
    mov x3,#8                 // position x
    mov x4,#15                // position y
    bl XDrawString
    
    b 100f
98:
    ldr x0,qAdrszMessErrButtonGC
    bl affichageMess
    b 100f
99:
    ldr x0,qAdrszMessErrButton
    bl affichageMess
100:
    ldp x1,lr,[sp],16      // restaur  2 registers
    ret                    // return to address lr x30
qAdrstButton:           .quad stButton
qAdrszTextButton:       .quad szTextButton
qAdrszMessErrButtonGC:  .quad szMessErrButtonGC
qAdrszMessErrButton:    .quad szMessErrButton
qButtonMask:            .quad  ButtonPressMask|ButtonReleaseMask|StructureNotifyMask|ExposureMask|LeaveWindowMask|EnterWindowMask

/******************************************************************/
/*     display text on screen                                     */ 
/******************************************************************/
/* x0 contains the address of text */
displayText:
    stp x1,lr,[sp,-16]!    // save  registers
    mov x5,x0              // text address
    mov x6,0               // text size
1:                         // loop compute text size
    ldrb w10,[x5,x6]       // load text byte
    cbz x10,2f             // zero -> end
    add x6,x6,1            // increment size
    b 1b                   // and loop
2:
    mov x0,x28             // display address
    mov x1,x27             // ident window
    mov x2,x26             // GC address
    mov x3,#50             // position x
    mov x4,#100            // position y
    bl XDrawString
100:
    ldp x1,lr,[sp],16      // restaur  2 registers
    ret                    // return to address lr x30
/******************************************************************/
/*     events clic mouse button                                      */ 
/******************************************************************/
/* x0 contains the address of event */
evtButtonMouse:
    stp x1,lr,[sp,-16]!         // save  registers
    ldr x10,[x0,XBE_window]     //  windows of event
    ldr x11,qAdrstButton        // load button ident
    ldr x12,[x11,BT_adresse]
    cmp x10,x12                 // equal ?
    bne 100f                    // no
    bl eraseText                // yes erase the text
    ldr x10,qAdrqCounterClic    // load counter clic
    ldr x0,[x10]
    add x0,x0,1                 // and increment
    str x0,[x10]
    ldr x1,qAdrsZoneConv        // and decimal conversion 
    bl conversion10
    ldr x0,qAdrszMessResult
    ldr x1,qAdrsZoneConv  
    bl strInsertAtCharInc       // and insert result at @ character
    bl displayText              // and display new text

100:
    ldp x1,lr,[sp],16           // restaur  2 registers
    ret                         // return to address lr x30
qAdrqCounterClic:         .quad qCounterClic
qAdrsZoneConv:            .quad sZoneConv
qAdrszMessResult:         .quad szMessResult
/******************************************************************/
/*     erase text                                      */ 
/******************************************************************/
eraseText:
    stp x1,lr,[sp,-16]!    // save  registers
    mov x0,x28             // display address
    mov x1,x27             // ident window
    mov x2,x25             // GC1 address
    mov x3,20              // position x
    mov x4,70              // position y
    mov x5,400
    mov x6,50
    bl XFillRectangle
100:
    ldp x1,lr,[sp],16      // restaur  2 registers
    ret                    // return to address lr x30
/********************************************************/
/*        File Include fonctions                        */
/********************************************************/
/* for this file see task include a file in language AArch64 assembly */
.include "../includeARM64.inc"
</syntaxhighlight>

=={{header|Ada}}==
{{libheader|GTK|GtkAda}}
{{libheader|GtkAda}}
The following solution is based on bindings to GTK+. 
Ada as a language does not provide standard GUI. 
Apart from GtkAda, there exist numerous other GUI bindings and libraries: 
CLAW, AdaGLUT, GWindow, JEWL, win32ada, QtAda etc.
<syntaxhighlight lang="ada">with Gdk.Event;   use Gdk.Event;
with Gtk.Button;  use Gtk.Button;
with Gtk.Label;   use Gtk.Label;
with Gtk.Window;  use Gtk.Window;
with Gtk.Widget;  use Gtk.Widget;
with Gtk.Table;   use Gtk.Table;

with Gtk.Handlers;
with Gtk.Main;

procedure Simple_Windowed_Application is
   Window : Gtk_Window;
   Grid   : Gtk_Table;
   Button : Gtk_Button;
   Label  : Gtk_Label;
   Count  : Natural := 0;

   package Handlers is new Gtk.Handlers.Callback (Gtk_Widget_Record);
   package Return_Handlers is
      new Gtk.Handlers.Return_Callback (Gtk_Widget_Record, Boolean);

   function Delete_Event (Widget : access Gtk_Widget_Record'Class)
      return Boolean is
   begin
      return False;
   end Delete_Event;

   procedure Destroy (Widget : access Gtk_Widget_Record'Class) is
   begin
     Gtk.Main.Main_Quit;
   end Destroy;

   procedure Clicked (Widget : access Gtk_Widget_Record'Class) is
   begin
     Count := Count + 1;
     Set_Text (Label, "The button clicks:" & Natural'Image (Count));
   end Clicked;

begin
   Gtk.Main.Init;
   Gtk.Window.Gtk_New (Window);
   Gtk_New (Grid, 1, 2, False);
   Add (Window, Grid);
   Gtk_New (Label, "There have been no clicks yet");
   Attach (Grid, Label, 0, 1, 0, 1);
   Gtk_New (Button, "Click me");
   Attach (Grid, Button, 0, 1, 1, 2);
   Return_Handlers.Connect
   (  Window,
      "delete_event",
      Return_Handlers.To_Marshaller (Delete_Event'Access)
   );
   Handlers.Connect
   (  Window,
      "destroy",
      Handlers.To_Marshaller (Destroy'Access)
   );
   Handlers.Connect
   (  Button,
      "clicked",
      Handlers.To_Marshaller (Clicked'Access)
   );
   Show_All (Grid);
   Show (Window);

   Gtk.Main.Main;
end Simple_Windowed_Application;</syntaxhighlight>

=={{header|APL}}==
{{works with|Dyalog APL}}

<syntaxhighlight lang="apl">∇ WindowedApplication

⍝ define a form with a label and a button
'Frm'⎕WC'Form' 'Clicks' (40 35) (10 15)
'Lbl'Frm.⎕WC'Label' 'There have been no clicks yet.' (10 10)
'Btn'Frm.⎕WC'Button' 'Click Me' (35 35) (25 25) ('Event' 'Select' 'Click')

⍝ callback function 
Frm.Clicks←0
Frm.Click←{
    Clicks+←1
    p0←(1+Clicks=1)⊃'have' 'has'
    p1←(1+Clicks=1)⊃'clicks' 'click'
    Lbl.Value←'There ',p0,' been ',(⍕Clicks),' ',p1,'.'
}

∇</syntaxhighlight>

{{works with|GNU APL}}

[my-application.apl]
<syntaxhighlight lang="apl">#!/usr/local/bin/apl --script --OFF

⍝ Some GTK API consts for readability
⍝ event poll type for X ← ⎕gtk
Blocking ← 1
Nonblocking ← 2

∇Z←get_NAME_and_POSITION;GUI_path;CSS_path;Handle
  GUI_path ← '/home/me/GNUAPL/workspaces/my-application.glade'
  CSS_path ← '/home/me/GNUAPL/workspaces/my-application.css'
  Handle ← CSS_path ⎕GTK GUI_path

  ⍝H_ID ← Handle, 'entry1'		⍝ Position field
  ⍝'<enter name>' ⎕gtk[H_ID] "set_text"	⍝ pre-fill entry

  ⊣⎕gtk Blocking	⍝ Wait for click event

  Z ← ⊂1↓⎕gtk[Handle, 'entry1'] "get_text"
  Z ← Z,⊂1↓⎕gtk[Handle, 'entry2'] "get_text"
  ⊣Handle ⎕gtk 0
∇

⍝ Launch GUI application
get_NAME_and_POSITION
</syntaxhighlight>

[my-application.css]
<syntaxhighlight lang="css">/* general button */
.BUTTON { color: #F00;      background: #4F4; }

/* the OK button */
#OK-button { color: #A22; background: #FFF; }
</syntaxhighlight>

[my-application.glade]
<syntaxhighlight lang="xml"><?xml version="1.0" encoding="UTF-8"?>
<!-- Generated with glade 3.22.1 -->
<interface>
  <requires lib="gtk+" version="3.20"/>
  <object class="GtkWindow" id="window1">
    <property name="can_focus">False</property>
    <child>
      <placeholder/>
    </child>
    <child>
      <object class="GtkGrid" id="grid1">
        <property name="visible">True</property>
        <property name="can_focus">False</property>
        <property name="row_homogeneous">True</property>
        <child>
          <object class="GtkLabel" id="label1">
            <property name="name">lblEmployee</property>
            <property name="visible">True</property>
            <property name="can_focus">False</property>
            <property name="label" translatable="yes">Employee</property>
            <property name="wrap">True</property>
          </object>
          <packing>
            <property name="left_attach">1</property>
            <property name="top_attach">1</property>
          </packing>
        </child>
        <child>
          <object class="GtkLabel" id="label2">
            <property name="name">lblPosition</property>
            <property name="visible">True</property>
            <property name="can_focus">False</property>
            <property name="label" translatable="yes">Position</property>
          </object>
          <packing>
            <property name="left_attach">1</property>
            <property name="top_attach">2</property>
          </packing>
        </child>
        <child>
          <object class="GtkEntry" id="entry1">
            <property name="name">entryEmployee</property>
            <property name="visible">True</property>
            <property name="can_focus">True</property>
            <property name="valign">center</property>
          </object>
          <packing>
            <property name="left_attach">3</property>
            <property name="top_attach">1</property>
            <property name="width">6</property>
          </packing>
        </child>
        <child>
          <object class="GtkEntry" id="entry2">
            <property name="name">entryPosition</property>
            <property name="visible">True</property>
            <property name="can_focus">True</property>
            <property name="valign">center</property>
          </object>
          <packing>
            <property name="left_attach">3</property>
            <property name="top_attach">2</property>
            <property name="width">6</property>
          </packing>
        </child>
        <child>
          <object class="GtkButton" id="btnOK">
            <property name="label" translatable="yes">button</property>
            <property name="name">OK-button</property>
            <property name="visible">True</property>
            <property name="can_focus">True</property>
            <property name="receives_default">True</property>
            <signal name="clicked" handler="clicked" swapped="no"/>
            <style>
              <class name="BUTTON"/>
            </style>
          </object>
          <packing>
            <property name="left_attach">4</property>
            <property name="top_attach">4</property>
            <property name="width">2</property>
          </packing>
        </child>
      </object>
    </child>
  </object>
</interface>
</syntaxhighlight>

=={{header|AppleScript}}==
<syntaxhighlight lang="applescript">
set counter to 0

set dialogReply to display dialog ¬
	"There have been no clicks yet" buttons {"Click Me", "Quit"} ¬
	with title "Simple Window Application"
set theAnswer to button returned of the result
if theAnswer is "Quit" then quit

repeat
	set counter to counter + 1
	set dialogReply to display dialog counter buttons {"Click Me", "Quit"} ¬
		with title "Simple Window Application"
	set theAnswer to button returned of the result
	if theAnswer is "Quit" then exit repeat
end repeat
</syntaxhighlight>

===Description===
AppleScript is the MacOS system automation language which creates scripts in various forms, including double-clickable applications, scripted folder actions, inner and inter application control and services, and more.
[https://www.melellington.com/simplewindow/Applescript-SWA.jpg Applescript Output]

=={{header|AutoHotkey}}==
<syntaxhighlight lang="autohotkey">; Create simple windowed application
   Gui, Add, Text, vTextCtl, There have been no clicks yet ; add a Text-Control
   Gui, Add, Button, gButtonClick xm, click me ; add a Button-Control
   Gui, Show, , Simple windowed application ; show the Window
Return ; end of the auto-execute section

ButtonClick: ; the subroutine executed each time the Button-Control is clicked
   count++ ; increment the click-counting var
   GuiControl, , TextCtl, %count% ; update the Text-Control with the click-counting var
Return ; end of the subroutine 

GuiClose: ; the subroutine executed when the Window is closed
   ExitApp ; exit this process
Return</syntaxhighlight>

=={{header|AutoIt}}==
<syntaxhighlight lang="autoit">
#include <ButtonConstants.au3>
#include <GUIConstantsEx.au3>
#include <StaticConstants.au3>
#include <WindowsConstants.au3>
#Region ### START Koda GUI section ###
Local $GUI = GUICreate("Clicks", 280, 50, (@DesktopWidth - 280) / 2, (@DesktopHeight - 50) / 2)
Local $lblClicks = GUICtrlCreateLabel("There have been no clicks yet", 0, 0, 278, 20, $SS_CENTER)
Local $btnClicks = GUICtrlCreateButton("CLICK ME", 104, 25, 75, 25)
GUISetState(@SW_SHOW)
#EndRegion ### END Koda GUI section ###

Local $counter = 0

While 1
	$nMsg = GUIGetMsg()
	Switch $nMsg
		Case $GUI_EVENT_CLOSE
			Exit

		Case $btnClicks
			$counter += 1
			GUICtrlSetData($lblClicks, "Times clicked: " & $counter)
	EndSwitch
WEnd
</syntaxhighlight>

=={{header|B4J}}==
<syntaxhighlight lang="freebasic">
#Region  Project Attributes 
	#MainFormWidth: 593
	#MainFormHeight: 179 
#End Region

Sub Process_Globals
	Private fx As JFX
	Private MainForm As Form
	Private btnClickMe As Button
	Private lblClickCounter As Label
	Private nClicks As Int = 0
	Private aPlurals() As Object = Array As Object(Array As String("has","click"),Array As String("have","clicks"))
End Sub

Sub AppStart (Form1 As Form, Args() As String)
	MainForm = Form1
	MainForm.RootPane.LoadLayout("Layout1") 'Load the layout file.
	MainForm.Show
End Sub

Sub btnClickMe_Action
	nClicks = nClicks + 1
	Dim aPlural() As Object = aPlurals(IIF(nClicks=1,0,1))
	lblClickCounter.Text = "There " & aPlural(0) & " been " & (nClicks) & " " & aPlural(1) & " so far."
End Sub

Sub IIF(test As Boolean, trueVal As Object, falseVal As Object) As Object
	If test Then
		Return trueVal
	Else
		Return falseVal
	End If
End Sub</syntaxhighlight>

Layout1.fxml (as B4J uses JavaFX's Scene Builder)
<syntaxhighlight lang="cfm">
<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.scene.text.*?>
<?import java.lang.*?>
<?import java.util.*?>
<?import javafx.collections.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.image.*?>
<?import javafx.scene.layout.*?>
<?import javafx.scene.paint.*?>
<?import javafx.scene.web.*?>


<AnchorPane id="paneMain" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="179.0" prefWidth="593.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1">
   <children>
      <Button id="btnClickMe" layoutX="254.0" layoutY="90.0" mnemonicParsing="false" text="Click Me">
         <font>
            <Font size="20.0" />
         </font>
      </Button>
      <Label id="lblClickCounter" layoutX="162.0" layoutY="31.0" text="There have been no clicks as yet.">
         <font>
            <Font size="20.0" />
         </font>
      </Label>
   </children>
</AnchorPane>
</syntaxhighlight>

=={{header|BASIC}}==
==={{header|BaCon}}===
Requires BaCon version 4.0.1 or higher, using GTK3.
<syntaxhighlight lang="bacon">OPTION GUI TRUE
PRAGMA GUI gtk3

gui = GUIDEFINE(" \
    { type=WINDOW name=window callback=delete-event title=\"Rosetta Code\" width-request=300 } \
    { type=BOX name=box parent=window orientation=GTK_ORIENTATION_VERTICAL } \
    { type=LABEL name=label parent=box height-request=50 label=\"There have been no clicks yet\" } \
    { type=BUTTON name=button parent=box callback=clicked label=\"Click Me\" }")

WHILE TRUE
    SELECT GUIEVENT$(gui)
        CASE "window"
            BREAK
        CASE "button"
            INCR clicked
            CALL GUISET(gui, "label", "label", "Button clicks: " & STR$(clicked))
    ENDSELECT
WEND</syntaxhighlight>

==={{header|BBC BASIC}}===
{{works with|BBC BASIC for Windows}}
<syntaxhighlight lang="bbcbasic">      INSTALL @lib$+"WINLIB2"
      INSTALL @lib$+"WINLIB5"
      
      window% = FN_newdialog("Rosetta Code", 100, 100, 120, 52, 8, 1000)
      PROC_static(window%, "There have been no clicks yet", 100, 10, 10, 100, 14, 0)
      PROC_pushbutton(window%, "Click me", FN_setproc(PROCclick), 40, 30, 40, 16, 0)
      PROC_showdialog(window%)
      
      REPEAT
        WAIT 1
      UNTIL !window% = 0
      QUIT
      
      DEF PROCclick
      PRIVATE clicks%
      clicks% += 1
      SYS "SetDlgItemText", !window%, 100, "Number of clicks = " + STR$(clicks%)
      ENDPROC</syntaxhighlight>

=={{header|Beads}}==
<syntaxhighlight lang="beads">beads 1 program simple title:'Simple windowed application' //  written by CodingFiend

var g : record  //  global tracked mutable state
	label : str
	nclicks : num

========================
calc main_init  // our one time initialization for the program
	g.label = "There have been no clicks yet"
	g.nclicks = 0

========================
//  In beads you subdivide the screen by slicing it horizontally or vertically 
//  so as to gradually break it down into pieces, some of which are drawn
horz slice main_draw  //  our main drawing function
	under
		draw_rect(fill:DARK_SLATE_GRAY) // fill entire screen

	//  slice the screen into 3 horz pieces, leaving 200 pt for our body
	skip 10 al
	add 200 pt main_draw2
	skip 10 al

vert slice main_draw2  //  now take the middle horz slice, and slice it vertically
	skip 10 al
	add 50 pt draw_click_count
	skip 2 al
	add 80 px draw_button
	skip 10 al

========================
draw draw_click_count
	draw_str(g.label, size:0.7, color:WHITE)
	
========================
draw draw_button
	draw_rect(fill:ORANGE, corner:20 pt, thick:2 pt, color:BROWN)
	draw_str("Click me", size:40, indent:8 pt, color:BLACK)
-------------------
track EV_TAP
	//  update our click count
	inc g.nclicks
	g.label = to_str(g.nclicks)</syntaxhighlight>

=={{header|C}}==
{{libheader|GTK}}
<syntaxhighlight lang="c">#include <stdio.h>
#include <gtk/gtk.h>

const gchar *clickme = "Click Me";
guint counter = 0;

#define MAXLEN 64
void clickedme(GtkButton *o, gpointer d)
{
    GtkLabel *l = GTK_LABEL(d);
    char nt[MAXLEN];
    
    counter++;
    snprintf(nt, MAXLEN, "You clicked me %d times", counter);
    gtk_label_set_text(l, nt);
}

int main(int argc, char **argv)
{
    GtkWindow *win;
    GtkButton *button;
    GtkLabel *label;
    GtkVBox *vbox;

    gtk_init(&argc, &argv);
    win = (GtkWindow*)gtk_window_new(GTK_WINDOW_TOPLEVEL);
    gtk_window_set_title(win, clickme);
    button = (GtkButton*)gtk_button_new_with_label(clickme);
    label = (GtkLabel*)gtk_label_new("There have been no clicks yet");
    gtk_label_set_single_line_mode(label, TRUE);
    vbox = (GtkVBox*)gtk_vbox_new(TRUE, 1);
    gtk_container_add(GTK_CONTAINER(vbox), GTK_WIDGET(label));
    gtk_container_add(GTK_CONTAINER(vbox), GTK_WIDGET(button));
    gtk_container_add(GTK_CONTAINER(win), GTK_WIDGET(vbox));
    g_signal_connect(G_OBJECT(win), "delete-event", (GCallback)gtk_main_quit, NULL);
    g_signal_connect(G_OBJECT(button), "clicked", (GCallback)clickedme, label);
    gtk_widget_show_all(GTK_WIDGET(win));
    gtk_main();
    return 0;
}</syntaxhighlight>

=={{header|C sharp|C#}}==

<syntaxhighlight lang="csharp">using System.Windows.Forms;

class RosettaForm : Form
{
    RosettaForm()
    {
        var clickCount = 0;

        var label = new Label();
        label.Text = "There have been no clicks yet.";
        label.Dock = DockStyle.Top;
        Controls.Add(label);

        var button = new Button();
        button.Text = "Click Me";
        button.Dock = DockStyle.Bottom;
        button.Click += delegate
                        {
                            clickCount++;
                            label.Text = "Number of clicks: " + clickCount + ".";
                        };
        Controls.Add(button);
    }

    static void Main()
    {
        Application.Run(new RosettaForm());
    }
}
</syntaxhighlight>

=={{header|C++}}==
{{uses from|Library|Qt|component1=QWidget|component2=QLabel|component3=QPushButton|component4=QVBoxLayout|component5-slots|component6=SIGNAL|component7=SLOT|component8=QApplication}}
{{libheader|Qt}} 4.4 with source files as shown , built from a Makefile generated by the Qt tool qmake
===clickcounter.h===
<syntaxhighlight lang="cpp">#ifndef CLICKCOUNTER_H
#define CLICKCOUNTER_H

#include <QWidget>
class QLabel ;
class QPushButton ;
class QVBoxLayout ;

class Counter : public QWidget {
    Q_OBJECT
public :
   Counter( QWidget * parent = 0 ) ;
private :
   int number ;
   QLabel *countLabel ;
   QPushButton *clicker ;
   QVBoxLayout *myLayout ;
private slots :
   void countClicks( ) ;
} ;
#endif</syntaxhighlight>
===clickcounter.cpp===
<syntaxhighlight lang="cpp">#include <QPushButton>
#include <QLabel>
#include <QVBoxLayout>
#include "clickcounter.h" 

Counter::Counter( QWidget * parent ) : QWidget( parent ) {
   number = 0 ;
   countLabel = new QLabel( "There have been no clicks yet!" ) ;
   clicker = new QPushButton( "click me" ) ;
   connect ( clicker , SIGNAL( clicked( ) ) , this , SLOT( countClicks( ) ) ) ;
   myLayout = new QVBoxLayout ;
   myLayout->addWidget( countLabel ) ;
   myLayout->addWidget( clicker ) ;
   setLayout( myLayout ) ;
}

void Counter::countClicks( ) {
   number++ ;
   countLabel->setText( QString( "The button has been clicked %1 times!").arg( number ) ) ;
}</syntaxhighlight>
===main.cpp===
<syntaxhighlight lang="cpp">#include <QApplication>
#include "clickcounter.h"

int main( int argc , char *argv[ ] ) {
   QApplication app( argc , argv ) ;
   Counter counter ;
   counter.show( ) ;
   return app.exec( ) ;
}</syntaxhighlight>

=={{header|Clojure}}==
<syntaxhighlight lang="clojure">(ns counter-window
  (:import (javax.swing JFrame JLabel JButton)))

(defmacro on-action [component event & body]
  `(. ~component addActionListener
      (proxy [java.awt.event.ActionListener] []
        (actionPerformed [~event] ~@body))))

(defn counter-app []
  (let [counter (atom 0)
        label (JLabel. "There have been no clicks yet")
        button (doto (JButton. "Click me!")
                 (on-action evnt  
                   (.setText label
                      (str "Counter: " (swap! counter inc)))))
        panel (doto (JPanel.)
                (.setOpaque true)
                (.add label)
                (.add button))]
    (doto (JFrame. "Counter App")
      (.setContentPane panel)
      (.setSize 300 100)
      (.setDefaultCloseOperation JFrame/EXIT_ON_CLOSE)
      (.setVisible true))))
</syntaxhighlight>

=={{header|Common Lisp}}==

{{libheader|CLIM}}

{{works with|McCLIM}}

<syntaxhighlight lang="lisp">(defpackage #:rcswa
  (:use #:clim #:clim-lisp))
(in-package #:rcswa)</syntaxhighlight>

This version uses CLIM's command system:

<syntaxhighlight lang="lisp">(define-application-frame simple-windowed-application ()
  ((clicks :initform 0
           :accessor clicks-of))
  (:menu-bar t)
  (:pane
   (make-pane 'application-pane
              :width '(40 :character)
              :height '(3 :character)
              :display-time :command-loop
              :display-function
                (lambda (pane stream)
                  (declare (ignore pane))
                  (format stream "~[There have been no clicks yet.~
                                    ~:;~:*There ~[have~;has~:;have~]~:* been ~R click~:P.~]"
                          (clicks-of *application-frame*))))))

(define-simple-windowed-application-command (com-click-me :menu t)
  ()
  (incf (clicks-of *application-frame*)))</syntaxhighlight>

This version uses an explicit pushbutton gadget, and may be used if more direct control over the UI layout and behavior is needed:

<syntaxhighlight lang="lisp">(define-application-frame simple-windowed-application ()
  ((clicks :initform 0
           :accessor clicks-of))
  (:panes
   (the-label :application
              :width '(40 :character)
              :height '(3 :character)
              :display-time t
              :display-function
                (lambda (pane stream)
                  (declare (ignore pane))
                  (format stream "~[There have been no clicks yet.~
                                    ~:;~:*There ~[have~;has~:;have~]~:* been ~R click~:P.~]"
                          (clicks-of *application-frame*))))
   (the-button :push-button
               :label "Click Me"
               :activate-callback
                 (lambda (button)
                   (declare (ignore button))
                   (incf (clicks-of *application-frame*))
                   (redisplay-frame-pane *application-frame*
                                         (find-pane-named *application-frame* 'the-label)
                                         :force-p t))))
  (:layouts (default
             (vertically (:equalize-width nil :align-x :center)
               the-label
               (spacing (:thickness 10) the-button)))))</syntaxhighlight>

In either case, the window is opened with:

<syntaxhighlight lang="lisp">(run-frame-top-level (make-application-frame 'simple-windowed-application))</syntaxhighlight>

=={{header|D}}==
===DFL===
{{works with|D|1}}
{{libheader|DFL}}
<syntaxhighlight lang="d">module winapp ;
import dfl.all ;
import std.string ;

class MainForm: Form {
  Label label ;
  Button button ;
  this() {
    width = 240 ;
    with(label = new Label) {
      text = "There have been no clicks yet" ;
      dock = DockStyle.TOP ;
      parent = this ;     
    }
    with(button = new Button) {
      dock = DockStyle.BOTTOM ;
      text = "Click Me" ;
      parent = this ;
      click ~= &onClickButton ;
    }
    height = label.height + button.height + 36 ;
  }
  private void onClickButton(Object sender, EventArgs ea) {
    static int count = 0 ;
    label.text = "You had been clicked me " ~ std.string.toString(++count) ~ " times." ;
  }
}

void main() {
    Application.run(new MainForm);  
}</syntaxhighlight>

===Hybrid===
{{works with|D|1}}
{{libheader|Hybrid}}
Hybrid uses config files to describe GUI layout.
SimpleWindow.cfg:
 import "themes/default.cfg"
 
 new FramedTopLevelWindow main {
 	frame.text = "Simple Window";
 
 	new Label label {
 		text = "There have been no clicks yet";
 	}
 
 	new Button button {
 		text = "Click me";
 		size = 201 20;
 	}
 }
SimpleWindow.d:
<syntaxhighlight lang="d">module SimpleWindow;
import tango.text.convert.Integer;
import tango.core.Thread; // For Thread.yield

import xf.hybrid.Hybrid; //For widgets and general API
import xf.hybrid.backend.GL; // For OpenGL Renderer

void main() {
	//load config file
	scope cfg = loadHybridConfig(`./SimpleWindow.cfg`);
	scope renderer = new Renderer;
	auto counter = 0;

	bool programRunning = true;
	while (programRunning) {
		// Tell Hybrid what config to use
		gui.begin(cfg);
		// Exit program if user clicks the Close button
		if (gui().getProperty!(bool)("main.frame.closeClicked")) {
			programRunning = false;
		}
		// Update text on the label
		if (counter != 0)
			Label("main.label").text = toString(counter);
		// Increment counter if the button has been clicked
		if (Button("main.button").clicked) {
			counter++;
		}
		// Finalize. Prepare to render
		gui.end();
		// Render window using OpenGL Renderer
		gui.render(renderer);

		Thread.yield();
	}
}</syntaxhighlight>

=={{header|Delphi}}==
{{works with|Delphi|5.0}}
Creating a "basic windowed application" in Delphi is quite simple. Start up the IDE and the default application is a single windowed app. This will have two files, the main project file "project1" and a unit file, "unit1". What I a going to do here is going to be somewhat different. I will do it all dynamically from the main "program file". Create this in any text editor and you can then either open it in the IDE to build it, or invoke the command line compiler. There is quite a bit going on behind the scenes with the VCL and the RTL.

Filename = SingleWinApp.dpr

'''NOTE:''' The project name here must match the name of the file.

<syntaxhighlight lang="delphi">-- begin file --

   Program SingleWinApp ;
 
   // This is the equivalent of the C #include
   Uses Forms, Windows, Messages, Classes, Graphics, Controls, StdCtrls ;

   
   type
     
     // The only reason for this declaration is to allow the connection of the
     // on click method to the forms button object. This class declaration adds
     // a procedure.

     TMainForm class(tform) 
       Procedure AddClicks(sender : tObject);
     end;


   // Use these globals.  
   var
  
     MainForm : tForm ;
     aLabel   : tLabel ;
     aButton  : tButton ;
     i        : integer = 0 ;


    // This is the Method call that we connect to the button object
    // to start counting the clicks.
    Procedure tMainForm.AddClicks(sender :tObject)
    begin
      inc(i);
      aLabel.Caption := IntToStr(i) + ' Clicks since startup' ;
    end;


    Begin
      // Do all the behind the scenes stuff that sets up the Windows environment 
      Application.Initialize ;

      // Create the form
      
      // Forms can either be created with an owner, like I have done here, or with
      // the owner set to Nil. In pascal (all versions of Borland) '''NIL''' is a
      // reserved, (the equivalent of '''NULL''' in Ansi C) word and un-sets any pointer 
      // variable. Setting the owner to the application object will ensure that the form is
      // freed by the application object when the application shuts down. If I had set
      // the owner to NIL then i would have had to make sure I freed the form explicitly
      // or it would have been orphaned, thus creating a memory leak.

      // I must direct your attention to the CreateNew constructor.  This is 
      // a non standard usage.  Normally the constructor Create() will call this
      // as part of the initialization routine for the form. Normally as you drop
      // various components on a form in deign mode, a DFM file is created with 
      // all the various initial states of the controls. This bypasses the 
      // DFM file altogether although all components AND the form are created
      // with default values. (see the Delphi help file).

      MainForm          := tMainForm.CreateNew(Application);
      MainForm.Parent   := Application ;
      MainForm.Position := poScreenCenter ;
      MainForm.Caption  := 'Single Window Application' ;

      // Create the Label, set its owner as MaiaForm
      aLabel          := tLabel.Create(mainForm);
      aLabel.Parent   := MainForm;
      aLabel.Caption  := IntToStr(i) + ' Clicks since startup' ;
      aLabel.Left     := 20 ;
      aLabel.Top      := MainForm.ClientRect.Bottom div 2 ;

      // Create the button, set its owner to MainForm
      aButton         := tButton.Create(MainForm);
      aButton.Parent  := MainForm ;
      aButton.Caption := 'Click Me!';
      aButton.Left    := (MainForm.ClientRect.Right div 2)-(aButton.Width div 2 );
      aButton.Top     := MainForm.ClientRect.Bottom - aButton.Height - 10 ;
      aButton.OnClick := AddClicks ;

      // Show the main form, Modaly. The ONLY reason to do this is because in this
      // demonstration if you only call the SHOW method, the form will appear and
      // disappear in a split second.
      MainForm.ShowModal ;
      
      Application.Run ;

   end. // Program</syntaxhighlight>

=={{header|E}}==
{{libheader|Swing}}
{{works with|E-on-Java}}
<syntaxhighlight lang="e">when (currentVat.morphInto("awt")) -> {
    var clicks := 0
    def w := <swing:makeJFrame>("Rosetta Code 'Simple Windowed Application'")
    w.setContentPane(JPanel`
        ${def l := <swing:makeJLabel>("There have been no clicks yet.")} $\
            ${def b := <swing:makeJButton>("Click Me")}
    `)
    b.addActionListener(def _ {
        to actionPerformed(_) { 
            clicks += 1
            l.setText(`Number of clicks: $clicks`)
        }
    })
    w.pack()
    w.show()
}</syntaxhighlight>

=={{header|EchoLisp}}==
UI elements are HTML DOM Nodes. '''ui-add''' adds an element to the UI. '''ui-on-event''' adds a (Lisp) event handler to an element.
<syntaxhighlight lang="scheme">
(define (ui-add-button text) ;; helper
    (define b (ui-create-element "button" '((type "button"))))
    (ui-set-html b text)
    (ui-add b))
    
(define (panel )
    (ui-clear)
    (define *clicks* 0)
    (define text (ui-create-element "span" '((style "font-weight:bold"))))
    (ui-add text)
    (ui-set-html text "No click yet")

    (define btn (ui-add-button "Click-me"))
    (define (count-clicks elem)
        (++ *clicks*)
        (ui-set-html text *clicks*))
    (ui-on-click btn count-clicks)

    (stdout-hide #t)
    (stdin-hide #t)) ;; end panel definition

(panel)
</syntaxhighlight>

=={{header|Elena}}==
ELENA 6.x:
<syntaxhighlight lang="elena">import forms;
import extensions;

public class MainWindow : SDIDialog
{
    Label  lblClicks;
    Button btmClickMe;
    
    //Store how much clicks the user doed
    int clicksCount;
    
    constructor new()
       <= super new()
    {        
        lblClicks := Label.new();
        btmClickMe := Button.new();
        
        clicksCount := 0;
        self
            .appendControl(lblClicks)
            .appendControl(btmClickMe);        
    
        self.Caption := "Rosseta Code";
        self.setRegion(100, 100, 160, 80);
    
        lblClicks.Caption := "Clicks: 0";
        lblClicks.setRegion(10, 2, 160, 20);

        btmClickMe.Caption := "Click me";
        btmClickMe.setRegion(7, 20, 140, 30);
        
        btmClickMe.onClick := (args){ self.onButtonClick(); };
    }
    
    private onButtonClick()
    {
        clicksCount := clicksCount + 1;
        
        lblClicks.Caption := "Clicks: " + clicksCount.toString();
    }
}</syntaxhighlight>

=={{header|Euphoria}}==
===EuWinGUI===
{{libheader|EuWinGUI}}
<syntaxhighlight lang="euphoria">include EuWinGUI.ew

Window("EuWinGUI - Simple windowed application",100,100,360,100)
constant Button1 = Control(Button,"Click me",250,20,80,25)
constant Label1 = Control(Label,"There have been no clicks yet",10,25,200,18)

integer clicks
clicks = 0

-- Event loop
while 1 do
    WaitEvent()
    if EventOwner = Button1 and Event = Click then
        clicks += 1
        SetText(Label1,sprintf("You clicked me %d times",clicks))
    end if
end while

CloseApp(0)</syntaxhighlight>

=={{header|F_Sharp|F#}}==
{{trans|C#}}
<syntaxhighlight lang="fsharp">open System.Windows.Forms

let mutable clickCount = 0

let form = new Form()

let label = new Label(Text = "There have been no clicks yet.", Dock = DockStyle.Top)
form.Controls.Add(label)

let button = new Button(Text = "Click me", Dock = DockStyle.Bottom)
button.Click.Add(fun _ ->
    clickCount <- clickCount+1
    label.Text <- sprintf "Number of clicks: %i." clickCount)
form.Controls.Add(button)

Application.Run(form)</syntaxhighlight>

=={{header|Factor}}==
<syntaxhighlight lang="factor">USING: accessors arrays kernel math math.parser namespaces
sequences ui ui.gadgets ui.gadgets.borders ui.gadgets.buttons
ui.gadgets.grids ui.gadgets.labels ui.gadgets.worlds ;
IN: rosetta-code.simple-windowed-application

SYMBOL: n

CONSTANT: on-btn-press [
    parents second n get number>string <label> { 0 1 }
    grid-add drop n inc
]

: build-ui ( -- ) [
    f
    T{ world-attributes { title "Simple windowed application" } }
    clone
    "click me" on-btn-press <border-button> 1array
    "There have been no clicks yet" <label> 1array
    2array <grid>
    { 100 100 } <border>
    >>gadgets
    open-window
] with-ui ;

: main ( -- ) 1 n set build-ui ;

MAIN: main</syntaxhighlight>

=={{header|Fantom}}==

<syntaxhighlight lang="fantom">
using fwt
using gfx

class SimpleApplication
{
  public static Void main ()
  {
    Window
    {
      title = "Simple Window Application"
      size = Size(350, 50)
      clicked := 0
      label := Label
      {
        text = "There have been no clicks yet"
      }
      Button
      {
        text = "Click me"
        onAction.add |Event e|
        {
          clicked += 1
          label.text = "There have been $clicked clicks"
        }
      },
      label,
    }.open
  }
}
</syntaxhighlight>

=={{header|Forth}}==
===with MINOS===
{{works with|bigFORTH}}
{{libheader|MINOS}}
<syntaxhighlight lang="forth">also minos
text-label ptr click-label
Variable click#  click# off
: click-win ( -- ) screen self window new window with
    X" There have been no clicks yet" text-label new
      dup F bind click-label
    ^ S[ 1 click# +!
         click# @ 0 <# #S s" Number of clicks: " holds #>
         click-label assign ]S X" Click me" button new
    &2 vabox new panel s" Clicks" assign show endwith ;
click-win</syntaxhighlight>

===The same with Theseus===
{{works with|bigFORTH}}
{{libheader|Theseus}}
<syntaxhighlight lang="forth">#! xbigforth
\ automatic generated code
\ do not edit

also editor also minos also forth

component class ccount
public:
  early widget
  early open
  early dialog
  early open-app
  text-label ptr click#
 ( [varstart] ) cell var clicks ( [varend] )
how:
  : open     new DF[ 0 ]DF s" Click counter" open-component ;
  : dialog   new DF[ 0 ]DF s" Click counter" open-dialog ;
  : open-app new DF[ 0 ]DF s" Click counter" open-application ;
class;

ccount implements
 ( [methodstart] )  ( [methodend] )
  : widget  ( [dumpstart] )
        X" There have been no clicks yet" text-label new  ^^bind click#
        ^^ S[ 1 clicks +!
clicks @ 0 <# #S s" Number of clicks: " holds #> click# assign ]S ( MINOS ) X" Click me"  button new
      &2 vabox new panel
    ( [dumpend] ) ;
  : init  ^>^^  assign  widget 1 :: init ;
class;

: main
  ccount open-app
  $1 0 ?DO  stop  LOOP bye ;
script? [IF]  main  [THEN]
previous previous previous</syntaxhighlight>


===with Tk/wish===
{{works with|gforth|0.7.3}}
{{libheader|Tk}}
Creates a GUI with 'wish' from tk library. Uses pipes on standard input and output (created throw linux system calls).

<syntaxhighlight lang="forth">0 value tk-in
0 value tk-out
variable #clicks
0 #clicks !

: wish{    \ send command to wish
    tk-in to outfile-id ;
: }wish    \ finish command to wish
    tk-in flush-file throw
    stdout to outfile-id ; 


: add-one  1 #clicks +! ;
: update-wish   wish{ .\" .label configure -text \"clicks: " #clicks @ . .\" \"" cr }wish ;

: counting
begin
    tk-out key-file
    dup '+' = if add-one update-wish then    \ add one if '+' received
    4 = until ;                              \ until Ctrl-D, wish exit

: initiating
    s" mkfifo tk-in tk-out" system
    s" wish <tk-in >tk-out &" system
    s" tk-in" w/o open-file throw to tk-in
    s" tk-out" r/o open-file throw to tk-out
    wish{ .\" pack [ label  .label -text \"There have been no clicks yet\" ] " cr }wish
    wish{ .\" pack [ button .click -text \"Click Me\" -command { puts \"+\" } ] " cr }wish ;

: cleaning
    tk-in close-file
    tk-out close-file
    s" rm tk-in tk-out" system ;

initiating counting cleaning</syntaxhighlight>

===with iMops===
{{works with|iMops|2.23}}
Macintosh only - Uses native MacOS GUI calls to Cocoa.
<syntaxhighlight lang="forth">
:class TextView' super{ TextView }
:m put: ( addr len -- )
   0 #ofChars: self SetSelect: self
   insert: self ;m
;class

Window+ w
  View wview
Button b
  100 30 100 20 setFrame: b
TextView' t
  200 30 200 15 setFrame: t

\ the running count is always on the stack
\ so a variable for that is not needed
:noname
  1+  \ increment the count
  " Number of clicks: " put: t
  dup deciNumstr insert: t ; setAction: b \ update the text representation of count

: go
   b addview: wview
   t addview: wview
  300 30 430 230 put: frameRect
    frameRect " Test" docWindow 
    wview new: w  show: w
  " click me" setTitle: b
  " There have been no clicks yet" put: t 
  0 ; \ the number of clicks start at zero

go</syntaxhighlight>

=={{header|FreeBASIC}}==
<syntaxhighlight lang="freebasic">
#Include "windows.bi"

Dim As HWND Window_Main, Static_Text, Button_Click
Dim As MSG msg
Dim As Integer Num_Click
Dim As String Text

'Create a window with a static text control and a button:
Window_Main = CreateWindow("#32770", "Simple Windowed Application", WS_OVERLAPPEDWINDOW Or WS_VISIBLE, 100, 100, 350, 200, 0, 0, 0, 0)
Static_Text = CreateWindow("STATIC", "There have been no clicks yet", WS_VISIBLE Or WS_CHILD Or WS_BORDER, 10, 30, 300, 20, Window_Main, 0, 0, 0)
Button_Click = CreateWindow("BUTTON", "Click me", WS_VISIBLE Or WS_CHILD, 100, 70, 100, 20, Window_Main, 0, 0, 0)
													
'Windows message loop:
Num_Click = 0
While GetMessage(@msg, Window_Main, 0, 0)
  TranslateMessage(@msg)
  DispatchMessage(@msg)
  Select Case msg.hwnd
    Case Button_Click
      If msg.message = WM_LBUTTONDOWN Then
        Num_Click = Num_Click + 1
        If Num_Click = 1 Then 
          Text = "Button has been clicked once"
        Else
          Text = "Button has been clicked " + Str(Num_Click) + " times"
        End If
	SetWindowText(Static_Text, Text)
      End If
    Case Window_Main
      If msg.message = WM_COMMAND Then End
  End Select
Wend

End
</syntaxhighlight>

=={{header|FutureBasic}}==
<syntaxhighlight lang="futurebasic">_window = 1

begin enum 1
  _label
  _clickMeBtn
end enum

void local fn BuildWindow
  window _window, @"Simple Windowed Application", (0,0,366,59)

  textlabel _label, @"There have been no clicks yet", (18,23,250,16)

  button _clickMeBtn,,, @"Click Me", (267,13,86,32)
end fn

void local fn ButtonClicked
  static long clickCount = 0

  clickCount++
  textlabel _label, fn StringWithFormat( @"The button has been clicked %ld times", clickCount )
end fn

void local fn DoDialog( ev as long, tag as long )
  select ( ev )
    case _btnClick
      select ( tag )
        case _clickMeBtn : fn ButtonClicked
      end select
  end select
end fn

fn BuildWindow

on dialog fn DoDialog

HandleEvents</syntaxhighlight>

=={{header|Gambas}}==
<syntaxhighlight lang="gambas">iCount As Integer                                                 'Counter of clicks!
hLabel As Label                                                   'We need a Label

Public Sub Form_Open()
Dim hButton As Button                                             'We need a Button

With Me                                                           'Set the Form's Properties..
  .height = 75                                                    'Set the Height
  .Width = 300                                                    'Set the Width
  .Arrangement = Arrange.Vertical                                 'Arrange items vertically
  .Padding = 5                                                    'Border area
  .Title = "Click counter!"                                       'Title displayed on the Form 
End With

hlabel = New Label(Me)                                            'Add a Label to the form

With hlabel                                                       'Set the Label's Properties..
  .expand = True                                                  'Expand the Label to fit the Form
  .Text = "There have been no clicks yet"                         'Add Text to the Label
  .Alignment = Align.Center                                       'Center the Text
End With

hButton = New Button(Me) As "Button1"                             'Add a Button to the form as Event "Button1"

With hButton                                                      'Set the Button's Properties..
  .Height = 28                                                    'Set the Height
  .Text = "&Click me"                                             'Add Text (The '&' adds a keyboard shortcut)
End With

End

Public Sub Button1_Click()                                        'When the Button is clicked..

Inc iCount                                                        'Increase the value of iCount
hLabel.text = "The button has been clicked " & iCount & " times"  'Display the amount of clicks"

End</syntaxhighlight>

=={{header|Gastona}}==
<syntaxhighlight lang="gastona">#javaj#

   <frames> main, Simple click counter
   
   <layout of main>
      PANEL, X
      bClick me, lClicks
      
#data#

   <NN> 0
   <lClicks> //There have been no clicks yet
   
#listix#

   <-- bClick me>
      NUM=, NN, NN+1
      -->, lClicks data!,, //@<NN> clicks so far

</syntaxhighlight>

=={{header|Go}}==
{{libheader|go-gtk}}
<syntaxhighlight lang="go">package main

import (
    "fmt"
    "github.com/mattn/go-gtk/gtk"
)

func main() {
    gtk.Init(nil)
    window := gtk.NewWindow(gtk.WINDOW_TOPLEVEL)
    window.SetTitle("Click me")
    label := gtk.NewLabel("There have been no clicks yet")
    var clicks int
    button := gtk.NewButtonWithLabel("click me")
    button.Clicked(func() {
        clicks++
        if clicks == 1 {
            label.SetLabel("Button clicked 1 time")
        } else {
            label.SetLabel(fmt.Sprintf("Button clicked %d times",
                clicks))
        }
    })
    vbox := gtk.NewVBox(false, 1)
    vbox.Add(label)
    vbox.Add(button)
    window.Add(vbox)
    window.Connect("destroy", func() {
        gtk.MainQuit()
    })
    window.ShowAll()
    gtk.Main()
}</syntaxhighlight>

=={{header|Groovy}}==
<syntaxhighlight lang="groovy">import groovy.swing.SwingBuilder

count = 0
new SwingBuilder().edt {
  frame(title:'Click frame', pack: true, show: true) {
    vbox {  
      countLabel = label("There have been no clicks yet.")
      button('Click Me', actionPerformed: {count++; countLabel.text = "Clicked ${count} time(s)."})
    }
  }
}</syntaxhighlight>

'''with binding:'''
<syntaxhighlight lang="groovy">import groovy.swing.SwingBuilder
import groovy.beans.Bindable

@Bindable class Model {
   Integer count = 0
}
model = new Model()
new SwingBuilder().edt {
  frame(title:'Click frame', pack: true, show: true) {
    vbox {  
      label(text: bind(source: model, sourceProperty: 'count',
        converter: { v -> !v ? "There have been no clicks yet." : "Clicked ${v} time(s)."}))
      button('Click Me', actionPerformed: {model.count++})
    }
  }
}</syntaxhighlight>

=={{header|Guish}}==
<syntaxhighlight>
c=0
p=|p|;v
l=|l|;<"There have been no clicks yet"o
b=|b|;=>c{
    c = add(1, @c)
    @l<@c
}<"click me"
@p<<<@b<<<@l
@l w
@p,o+
</syntaxhighlight>

=={{header|Haskell}}==
{{libheader|Gtk}} from [http://hackage.haskell.org/packages/hackage.html HackageDB]
<syntaxhighlight lang="haskell">import Graphics.UI.Gtk
import Data.IORef

main :: IO ()
main = do
  initGUI
  window <- windowNew
  window `onDestroy` mainQuit
  windowSetTitle window "Simple Windowed App"
  set window [ containerBorderWidth := 10 ]

  hbox <- hBoxNew True 5

  set window [ containerChild := hbox ]
  
  lab <- labelNew (Just "There have been no clicks yet")
  button <- buttonNewWithLabel "Click me"
  set hbox [ containerChild := lab ]
  set hbox [ containerChild := button ]
  
  m <- newIORef 0

  onClicked button $ do
    v <- readIORef m
    writeIORef m (v+1)
    set lab [ labelText := "There have been " ++ show (v+1) ++ " clicks" ]

  widgetShowAll window

  mainGUI</syntaxhighlight>

=={{header|HicEst}}==
<syntaxhighlight lang="hicest"> CHARACTER label="There have been no clicks yet"

    DO count = 1, 1E100 ! "forever"
      DLG(Button="Click me", Width=3, TItle=label) ! Width=3 to display full length label
      label = "Clicked " // count // "time(s)"
    ENDDO

 END</syntaxhighlight>

==Icon and {{header|Unicon}}==

This version is Unicon-specific:
<syntaxhighlight lang="unicon">import gui
$include "guih.icn"

procedure main()
   SimpleWindow().show_modal()
end

class SimpleWindow : Dialog(label, button, count)
   method component_setup()
      self.set_attribs("size=222,139")
      label := Label()
      label.set_pos("24", "24")
      label.set_internal_alignment("l")
      label.set_label("There have been no clicks yet.")
      self.add(label)
      button := TextButton()
      button.set_pos(24, 53)
      button.set_label("click me")
      button.set_internal_alignment("c")
      button.connect(self, "incr", ACTION_EVENT)
      self.add(button)
   end

   method incr()
       /count := 0
       label.set_label("There have been "||(count+:=1)||" clicks.")
    end

   initially
      self.Dialog.initially()
end</syntaxhighlight>

=={{header|IDL}}==
<syntaxhighlight lang="idl">pro counter, ev
  widget_control, ev.top, get_uvalue=tst
  tst[1] = tst[1]+1
  widget_control, tst[0], set_value="Number of clicks: "+string(tst[1],format='(i0)')
  widget_control, ev.top, set_uvalue=tst
end
 
id = widget_base(title = 'Window Title',column=1)
ld = widget_label(id, value = 'There have been no clicks yet.')
widget_control, /realize, id, set_uvalue=[ld,0]
dummy = widget_button(id,value=' Click Me ',event_pro='counter')
xmanager, "Simple", Id
 
end</syntaxhighlight>

=={{header|J}}==
'''J 9.x''' (note: the J 8.x version works fine under J 9.x)<syntaxhighlight lang="j">simple_run=: {{
  simple_clicks=: 0   NB. initialize accumulator
  wd {{)n
    pc simple closeok escclose;
    cc click button;cn "Click me";
    cc message static;cn "There have been no clicks yet.";
    pshow;
}}}}
simple_run''
 
simple_click_button=: {{wd 'set message text Button-use count: ',": simple_clicks=: 1+simple_clicks}}</syntaxhighlight>
'''J 8.x'''
<syntaxhighlight lang="j">SIMPLEAPP=: noun define
pc simpleApp;
cc inc button;cn "Click me";
cc shownText static;cn "There have been no clicks yet.";
)

simpleApp_run=: verb define
  wd SIMPLEAPP
  simpleApp_accum=: 0   NB. initialize accumulator
  wd 'pshow;'
)

simpleApp_inc_button=: verb define
  wd 'set shownText text ','Button-use count:  ',": simpleApp_accum=: >: simpleApp_accum
)

simpleApp_close=: wd bind 'pclose'
simpleApp_cancel=: simpleApp_close

simpleApp_run''</syntaxhighlight>

'''J 6.x'''
<syntaxhighlight lang="j">SIMPLEAPP=: noun define
pc simpleApp;
xywh 131 11 44 12;cc inc button;cn "Click me";
xywh 7 10 115 11;cc shownText static;cn "There have been no clicks yet.";
pas 6 6;pcenter;
rem form end;
)

simpleApp_run=: verb define
  wd SIMPLEAPP
  simpleApp_accum=: 0   NB. initialize accumulator
  wd 'pshow;'
)

simpleApp_inc_button=: verb define
  wd 'set shownText *','Button-use count:  ',": simpleApp_accum=: >: simpleApp_accum
)

simpleApp_close=: wd bind 'pclose'
simpleApp_cancel=: simpleApp_close

simpleApp_run''</syntaxhighlight>

=={{header|Java}}==
{{libheader|AWT}}
{{libheader|Swing}}
<syntaxhighlight lang="java">import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.SwingUtilities;
public class Clicks extends JFrame{
	private long clicks = 0;

	public Clicks(){
		super("Clicks");//set window title
		JLabel label = new JLabel("There have been no clicks yet");
		JButton clicker = new JButton("click me");
		clicker.addActionListener(//listen to the button
			new ActionListener(){
				@Override
				public void actionPerformed(ActionEvent e) {
					label.setText("There have been " + (++clicks) + " clicks");//change the text
				}
			}
		);
		setLayout(new BorderLayout());//handles placement of components
		add(label,BorderLayout.CENTER);//add the label to the biggest section
		add(clicker,BorderLayout.SOUTH);//put the button underneath it
		label.setPreferredSize(new Dimension(300,100));//nice big label
		label.setHorizontalAlignment(JLabel.CENTER);//text not up against the side
		pack();//fix layout
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//stop the program on "X"
		setVisible(true);//show it
	}
	public static void main(String[] args){
		SwingUtilities.invokeLater( //Swing UI updates should not happen on the main thread
			() -> new Clicks() //call the constructor where all the magic happens
		);
	}
}</syntaxhighlight>

=={{header|JavaFX Script}}==
{{libheader|JavaFX 1.2}}
<syntaxhighlight lang="javafx">import javafx.stage.*;
import javafx.scene.*;
import javafx.scene.layout.*;
import javafx.scene.control.*;

Stage {
   scene: Scene {
      width: 300 height: 200
      content: VBox {
         var clicks: Integer;

         spacing: 10
         content: [
            Label {
               def varText = bind if (clicks == 0) then "no clicks yet" else "{clicks} clicks"
               text : bind "There have been {varText}"
            }
            Button {
               text: "click me"
               onMouseClicked: function(e) { clicks++; }
            }
         ]
      }
   }
}</syntaxhighlight>

=={{header|JavaScript}}==
<syntaxhighlight lang="javascript">
<html>
<head>
    <title>Simple Window Application</title>
</head>

<body>
    <br> &nbsp &nbsp &nbsp &nbsp    

    <script type="text/javascript">
        var box = document.createElement('input') 
        box.style.position = 'absolute';  // position it
        box.style.left = '10px';
        box.style.top = '60px';
        document.body.appendChild(box).style.border="3px solid white"; 
        document.body.appendChild(box).value = "There have been no clicks yet"; 
        document.body.appendChild(box).style['width'] = '220px';
        var clicks = 0;
        function count_clicks() {
            document.body.appendChild(box).remove()
            clicks += 1;
            document.getElementById("clicks").innerHTML = clicks;
        };
    </script>

    <button type="button" onclick="count_clicks()"> Click me</button>
    <pre><p>    Clicks: <a id="clicks">0</a> </p></pre> 
</body>

</html>
</syntaxhighlight>

[http://melellington.com/simplewindow/javascript-simple-window.html  Javascript Output]

----

=={{header|Julia}}==
Uses the Gtk library.
<syntaxhighlight lang="julia">using Gtk.ShortNames

function clickwindow()
    clicks = 0
    win = Window("Click Counter", 300, 100) |> (Frame() |> (vbox = Box(:v)))
    lab = Label("There have been no clicks yet.")
    but = Button("click me")
    push!(vbox, lab)
    push!(vbox, but)
    set_gtk_property!(vbox, :expand, lab, true)
    set_gtk_property!(vbox, :spacing, 20)
    callback(w) = (clicks += 1; set_gtk_property!(lab, :label, "There have been $clicks button clicks."))
    id = signal_connect(callback, but, :clicked)
    Gtk.showall(win)
    c = Condition()
    endit(w) = notify(c)
    signal_connect(endit, win, :destroy)
    wait(c)
end

clickwindow()
</syntaxhighlight>

=={{header|Kotlin}}==
{{trans|Java}}
<syntaxhighlight lang="scala">// version 1.0.6

import java.awt.BorderLayout
import java.awt.event.ActionEvent
import java.awt.event.ActionListener
import javax.swing.*

class Clicks : JFrame(), ActionListener {
    private var clicks = 0
    private val label: JLabel
    private val clicker: JButton
    private var text: String

    init {
        text = "There have been no clicks yet"
        label = JLabel(text)
        clicker = JButton("click me")
        clicker.addActionListener(this)        // listen to the button
        layout = BorderLayout()                // handles placement of components
        add(label, BorderLayout.CENTER)        // add the label to the biggest section
        add(clicker, BorderLayout.SOUTH)       // put the button underneath it
        setSize(300, 200)                       // stretch out the window
        defaultCloseOperation = EXIT_ON_CLOSE  // stop the program on "X"
        isVisible = true                       // show it
    }

    override fun actionPerformed(arg0: ActionEvent) {
        if (arg0.source == clicker) {           // if they clicked the button
            if (clicks == 0) text = "There has been " + (++clicks) + " click"
            else text = "There have been " + (++clicks) + " clicks"
            label.text = text                  // change the text
        }
    }
}

fun main(args: Array<String>) {
    Clicks()  // call the constructor where all the magic happens
}</syntaxhighlight>

{{libheader|TornadoFX}}
<syntaxhighlight lang="scala">
import tornadofx.*

class ClicksView: View("Clicks example") {
    var clicks = 0
    override val root = vbox(5) {
        var label1 = label("There have been no clicks yet")
        button("Click me!") { action { label1.text = "Clicked ${++clicks} times." } }
    }
}

class ClicksApp: App(ClicksView::class)

fun main(args: Array<String>) = launch<ClicksApp>(args)
</syntaxhighlight>

=={{header|Lambdatalk}}==
The environment is a small wiki: http://epsilonwiki.free.fr/lambdaway/ 

The code is tested in this page: http://epsilonwiki.free.fr/lambdaway/?view=popup 
<syntaxhighlight lang="scheme">
1) the label: {div {@ id="label"} There have been no clicks yet }
2) the button: {input {@ type="button" value="click me" onclick="CLICKAPP.inc()" }}
3) the script: {script °° code °°} where code is a single function:

var CLICKAPP = (function() {
  var counter = 0;
  var inc = function() {
      counter++;
      getId('label').innerHTML = 
      'There are ' + counter + ' clicks now'; 
  };
  return {inc:inc}
})();
</syntaxhighlight>

=={{header|Liberty BASIC}}==
<syntaxhighlight lang="lb">nomainwin
    button #demo.btn, "Click Me", [btnClick], UL, 20, 50
    statictext #demo.num, "There have been no clicks yet.", 20, 100, 240, 30
    open "Rosetta Task: Simple windowed application" for window as #demo
    #demo "trapclose [quit]"
    nClicks = 0
wait

[quit]
    close #demo
end

[btnClick]
    nClicks = nClicks + 1
    #demo.num "The button has been clicked ";nClicks;" times."
wait</syntaxhighlight>

=={{header|Lingo}}==
The standard approach in Lingo for creating GUIs and assigning scripts for handling user interaction is to use the graphical IDE/GUI-Builder "Director". But windows and sprites (visual elements) can also be created and scripted programmatically only:
<syntaxhighlight lang="lingo">on startMovie

  -- window settings
  _movie.stage.title = "Hello World!"
  _movie.stage.titlebarOptions.visible = TRUE
  _movie.stage.rect = rect(0,0,320, 240)
  _movie.centerStage = 1

  -- create a label (called "field" in Director)
  m = new(#field)
  m.name = "label"
  m.rect = rect(0,0,320,0)
  m.text = "There have been no clicks yet"
  m.alignment = "center"
  
  -- create sprite, assign field
  _movie.puppetSprite(1, TRUE)
  sprite(1).member = m
  sprite(1).loc = point(0,80)
  
  -- create a button
  m = new(#button)
  m.rect = rect(0,0,220,0)
  m.text = "click me"
  m.alignment = "center"
  
  -- create sprite, assign button
  _movie.puppetSprite(2, TRUE)
  sprite(2).member = m
  sprite(2).loc = point(50,105)
  
  -- create new script at runtime, assign it to button sprite
  m = new(#script)
  m.scriptType = #score
  m.scriptText = "on mouseDown"&RETURN&\
  "  m=member("&QUOTE&"label"&QUOTE&")"&RETURN&\
  "  m.text=string(integer(m.text)+1)"&RETURN&\
  "end"
  sprite(2).scriptInstanceList.add(m.script.new())

  -- force immediate update
  _movie.updateStage()
  
  -- show the window
  _movie.stage.visible = 1

end</syntaxhighlight>


=={{header|LiveCode}}==

The LiveCode script here meets the specification 100%,
but is not in common LiveCode style.  Typically the 
mouseUp command would be attached to the button 
rather than to the 'card' (window).  Nevertheless, the card
is in the object's message path so the button works well.

<syntaxhighlight lang="livecode">global count
on openCard
   put empty into count
   put "There have been no clicks yet" into field "clicks"
end openCard
on mouseUp
   add 1 to count
   put count into field "clicks"
end mouseUp</syntaxhighlight>

[http://melellington.com/simplewindow/livecode-simple-window.jpg  LiveCode Output]



----

=={{header|Logo}}==

{{works with|MSWlogo}}

<syntaxhighlight lang="logo">to clickwindow
windowCreate "root "clickWin [Click that button!!!] 0 0 100 100 []
Make "i 0
staticCreate "clickWin "clickSt [There have been no clicks yet] 0 0 100 20
buttonCreate "clickWin "clickBtn [click me] 10 20 80 20 ~
	[Make "i :i+1 ~
	ifelse :i=1 [staticUpdate "clickSt (list "clicked :i "time)] ~
	            [staticUpdate "clickSt (list "clicked :i "times)]]
end</syntaxhighlight>

The window is opened with:
<syntaxhighlight lang="logo">clickwindow</syntaxhighlight>

=={{header|Lua}}==
<syntaxhighlight lang="lua">require"iuplua"
l = iup.label{title="There have been no clicks yet."}
b = iup.button{title="Click me!"}
clicks = 0
function b:button_cb()
  clicks = clicks + 1
  l.title = "There have been " .. clicks/2 .. " clicks so far." --yes, this is correct.
end
dlg = iup.dialog{iup.vbox{l, b}, title="Simple Windowed Application"}
dlg:show()

if (not iup.MainLoopLevel or iup.MainLoopLevel()==0) then
  iup.MainLoop()
end</syntaxhighlight>

=={{header|M2000 Interpreter}}==
For labels M2000 window manager use Buttons with locked property to true. We can press enter because when the form open, default control is the Button1 (the second button we make). edit

For label1 we make a linked property, named Caption$ (we can use dot, so we can use label1.caption$). See that we make as second linked property for the same property but with a number (cap). How this is possible?

Μ2000 controls are internal COM objects and as those they can use Variant type properties and these properties can convert as they need. So if need a string and we pass a number then the number change to string.


<syntaxhighlight lang="m2000 interpreter">
Module CheckIt {
      Declare Form1  Form
      Declare Label1 Button Form Form1
      Declare Button1 Button Form Form1
      Method Label1,"move", 2000, 2000, 4000, 600
      Method Button1,"move", 2000, 3000, 4000, 600
      With Label1, "Caption" as caption$, "Locked", true, "Caption" as cap
      With Button1, "Caption", "click me", "Default", True   ' make this the default control
      caption$="There have been no clicks yet"
      m=0
      Function Button1.Click {
                  m++
                  cap=m
      }
      Method Form1, "Show",1
      Declare Form1 Nothing
}
Checkit
</syntaxhighlight>

=={{header|Mathematica}}/{{header|Wolfram Language}}==
<syntaxhighlight lang="mathematica">DynamicModule[{n = 0}, 
 CreateDialog[{Dynamic@
    TextCell@If[n == 0, "There have been no clicks yet", n], 
   Button["click me", n++]}]]</syntaxhighlight>

=={{header|MAXScript}}==
<syntaxhighlight lang="maxscript">rollout buttonClick "Button Click"
(
    label l "There have been no clicks yet"
    button clickMe "Click me"
    local clickCount = 0

    on clickMe pressed do
    (
        clickCount += 1
        l.text = ("Number of clicks: " + clickCount as string)
    )
)
createDialog buttonClick</syntaxhighlight>

=={{header|Modula-3}}==
{{libheader|Trestle}}

This code uses <tt>Trestle</tt>, a windowing toolkit developed for Modula-3.
<syntaxhighlight lang="modula3">MODULE Click EXPORTS Main;

IMPORT Fmt, TextVBT, ButtonVBT, VBT, Axis, HVSplit, TrestleComm, Trestle;

VAR label := TextVBT.New("There have been no clicks yet.");
    button := ButtonVBT.New(TextVBT.New("Click me!"), Clicked);
    main := HVSplit.Cons(Axis.T.Ver, label, button, adjustable := FALSE);
    count := 0;

PROCEDURE Clicked(<*UNUSED*>button: ButtonVBT.T; <*UNUSED*>READONLY cd: VBT.MouseRec) =
  BEGIN
    INC(count);
    TextVBT.Put(label, "Button pressed: " & Fmt.Int(count));
  END Clicked;

<*FATAL TrestleComm.Failure*>
BEGIN
  Trestle.Install(main);
  Trestle.AwaitDelete(main);
END Click.</syntaxhighlight>

To compile the above code, you need to create a file called <tt>m3makefile</tt> which contains:
<pre>
import("ui")
import("libm3")
implementation("Click")
program("Click")
</pre>

=={{header|Nanoquery}}==
<syntaxhighlight lang="nanoquery">import Nanoquery.Util.Windows

// define the necessary objects
$w = new("Window")
$b = new("Button")
$l = new("Label")

$b.setParent($w)
$l.setParent($w)

// define the amount of clicks
$clicks = 0

// a function to update the label
def updateLabel($caller, $event)
        global $clicks
        global $l

        $clicks = $clicks+1
        $l.setText(str($clicks))

        global $clicks = $clicks
end

// prepare the components to be displayed
$w.setSize(200,200)
$b.setText("click me")
$b.setPosition(0,100)
$l.setText("There have been no clicks yet")

// set the button's event handler to the function updateLabel 
$b.setHandler($updateLabel)

// show the window
$w.show()</syntaxhighlight>

=={{header|Nim}}==
{{libheader|GTK2}}
<syntaxhighlight lang="nim">import gtk2

nim_init()

var
  win = windowNew WINDOW_TOPLEVEL
  button = buttonNew "Click me"
  label = labelNew  "There have been no clicks yet"
  vbox = vboxNew(true, 1)
  counter = 0

proc clickedMe(o: var PButton, l: PLabel) =
  inc counter
  l.setText "You clicked me " & $counter & " times"

win.setTitle "Click me"
vbox.add label
vbox.add button
win.add vbox
discard win.signal_connect("delete-event", SignalFunc mainQuit, nil)
discard button.signal_connect("clicked", SignalFunc clickedMe, label)
win.showAll()
main()</syntaxhighlight>

=={{header|Objective-C}}==
{{works with|GNUstep}}
<syntaxhighlight lang="objc">#include <Foundation/Foundation.h>
#include <AppKit/AppKit.h>

@interface ClickMe : NSWindow
{
  NSButton *_button;
  NSTextField *_text;
  int _counter;
}
- (void)applicationDidFinishLaunching: (NSNotification *)notification;
- (BOOL)applicationShouldTerminateAfterLastWindowClosed: (NSNotification *)notification;
- (void)advanceCounter: (id)sender;
@end</syntaxhighlight>

<syntaxhighlight lang="objc">@implementation ClickMe : NSWindow
-(instancetype) init
{
  NSButton *button = [[NSButton alloc] init];
  [button setButtonType: NSToggleButton];
  [button setTitle: @"Click Me"];
  [button sizeToFit];
  [button setTarget: self];
  [button setAction: @selector(advanceCounter:)];
  NSRect buttonRect = [button frame];

  NSTextField *text = [[NSTextField alloc] 
	   initWithFrame: NSMakeRect(buttonRect.origin.x, buttonRect.size.height,
				     buttonRect.size.width, buttonRect.size.height)];
  [text setAlignment: NSCenterTextAlignment];
  [text setEditable: NO];
  [text setStringValue: @"There have been no clicks yet"];
  [text sizeToFit];

  // reset size of button according to size of (larger...?) text
  [button 
    setFrameSize: NSMakeSize( [text frame].size.width, buttonRect.size.height ) ];

  int totalWindowHeight = buttonRect.size.height + [text frame].size.height;
  
  if ((self = [super initWithContentRect: NSMakeRect(100, 100, 
				    [text frame].size.width, totalWindowHeight)
        styleMask: (NSTitledWindowMask | NSClosableWindowMask)
      backing: NSBackingStoreBuffered
      defer: NO])) {
    _counter = 0;
    _button = button;
    _text = text;

    [[self contentView] addSubview: _text];
    [[self contentView] addSubview: _button];

    [self setTitle: @"Click Me!"];
    [self center];
  }
  return self;
}


- (void)applicationDidFinishLaunching: (NSNotification *)notification
{
  [self orderFront: self];
}

- (BOOL)applicationShouldTerminateAfterLastWindowClosed: (NSNotification *)notification
{
  return YES;
}

- (void)advanceCounter: (id)sender
{
  [_text setStringValue: [NSString stringWithFormat: @"Clicked %d times", ++_counter]];
}
@end


int main()
{
  @autoreleasepool {
    NSApplication *app =  [NSApplication sharedApplication];
    ClickMe *clickme = [[ClickMe alloc] init];
    [app setDelegate: clickme];
    [app run];
  }
  return 0;
}</syntaxhighlight>

=={{header|OCaml}}==
* with '''Labltk''', the '''Tk''' OCaml binding:
<syntaxhighlight lang="ocaml">#directory "+labltk"
#load "labltk.cma"

let () =
  let top = Tk.openTk() in
  Wm.title_set top "Tk-OCaml Example";
  let label = Label.create ~text:"There have been no clicks yet" top in
  let b =
    Button.create
        ~text:"click me"
        ~command:(fun () -> Tk.closeTk (); exit 0)
        top
  in
  Tk.pack [Tk.coe label; Tk.coe b];
  Tk.mainLoop ();
;;</syntaxhighlight>

* with '''LablGTK2''', the '''GTK2''' OCaml binding:
<syntaxhighlight lang="ocaml">open GMain

let window = GWindow.window ~border_width:2 ()
let vbox = GPack.vbox ~packing:window#add ()
let label = GMisc.label ~text:"There have been no clicks yet" ~packing:vbox#pack ()
let button = GButton.button ~label:"click me" ~packing:vbox#pack ()

let () =
  window#event#connect#delete ~callback:(fun _ -> true);
  window#connect#destroy ~callback:Main.quit;
  button#connect#clicked ~callback:window#destroy;
  window#show ();
  Main.main ()</syntaxhighlight>

=={{header|ooRexx}}==
<syntaxhighlight lang="oorexx">/* REXX ***************************************************************************************
* 18.06.2014 Walter Pachl shortened from Rony Flatscher's bsf4oorexx (see sourceforge) samples
* Look there for ShowCount.rxj
* bsf4oorexx lets the ooRexx program use Java classes
**********************************************************************************************/
userData=.directory~new    -- a directory which will be passed to Rexx with the event

   --  create a framed Java window, set a title text
win=.bsf~new("java.awt.Frame", "Show Count")
   -- Create a Java RexxProxy for controlling the closing of the application
rexxCloseEH =.RexxCloseAppEventHandler~new   -- Rexx event handler
   -- Create Java RexxProxy for the Rexx event handler
rpCloseEH=BsfCreateRexxProxy(rexxCloseEH,,"java.awt.event.WindowListener" )
win~addWindowListener(rpCloseEH) -- add RexxProxy event handler

   -- create a Java push button
but=.bsf~new("java.awt.Button","Press me!")
   -- Create a RexxProxy for the button Rexx event handler
rp=BsfCreateRexxProxy(.RexxShowCountEventHandler~new,userData,"java.awt.event.ActionListener")
but~addActionListener(rp)        -- add RexxProxy event handler

lab=.bsf~new("java.awt.Label")   -- create a Java label,set it to show the text centered
userData~label=lab               -- save label object for later use in event handler
lab~setAlignment(lab~center)     -- set alignment to center
lab~setText("Button was not yet pressed") -- assign initial text to the label

win ~~add("Center",lab) ~~add("South",but) -- add the label and the button to the frame
win ~~pack                       -- now calculate all widget dimensions
call enlargeWidth win,but,120    -- enlarge the width of the frame and the button

win ~~setVisible(.true) ~~toFront   -- make frame visible and move it to the front

userData~i=0                     -- set counter to 0

rexxCloseEH~waitForExit          -- wait until we are allowed to end the program

-- if Java was loaded by Rexx,then terminate Java's RexxEngine to inhibit callbacks from Java
call BSF.terminateRexxEngine

::requires BSF.CLS      -- get Java support

   /* enlarge the width of the frame and of the button without using a layout manager  */
::routine enlargeWidth
  use arg win,but,addToWidth
  winDim=win~getSize            -- get frame's dimension
  winDim~width+=addToWidth      -- increase width
  win~setSize(winDim)           -- set frame's dimension

/* ------------------------------------------------------------------------ */
/* Rexx event handler to set "close app" indicator */
::class RexxCloseAppEventHandler
::method init                   -- constructor
  expose closeApp
  closeApp  = .false            -- if set to .true, then it is safe to close the app

::attribute closeApp            -- indicates whether app should be closed

::method unknown                -- intercept unhandled events,do nothing

::method windowClosing          -- event method (from WindowListener)
  expose closeApp
  closeApp=.true                -- indicate that the app should close

::method waitForExit            -- method blocks until attribute is set to .true
  expose closeApp
  guard on when closeApp=.true

/* ------------------------------------------------------------------------ */
/* Rexx event handler to process tab changes */
::class RexxShowCountEventHandler
::method actionPerformed
  use arg eventObject,slotDir
  call showCount slotDir~userData

/* ------------------------------------------------------------------------ */
::routine ShowCount             -- increment counter and show text
   use arg userData
   userData~i+=1                -- increment counter in directory object
   Select                       -- construct text part
     When userData~i=1 Then how_often='once'
     When userData~i=2 Then how_often='twice'
     When userData~i=3 Then how_often='three times'
     Otherwise how_often=userData~i 'times'
   End
   userData~label~setText("Button was pressed" how_often) -- display text</syntaxhighlight>

=={{header|Oz}}==
<syntaxhighlight lang="oz">functor
import
   Application
   QTk at 'x-oz://system/wp/QTk.ozf'
define
   Count = {NewCell 0}
   Label
   GUI = td(action:proc {$} {Application.exit 0} end %% exit on close
	    label(text:"There have been no clicks yet." handle:Label)
	    button(text:"Click Me"
		   action:proc {$}
			     Count := @Count + 1
			     {Label set(text:"Number of clicks: "#@Count#".")}
			  end
		  ))
   Window = {QTk.build GUI}
   {Window show}
end
</syntaxhighlight>

=={{header|Pascal}}==
{{works with|Free_Pascal}}
{{libheader|SysUtils}}
{{libheader|glib2}}
{{libheader|Gtk2}}
Ported from the C example.
<syntaxhighlight lang="pascal">Program SimpleWindowApplication;

uses
  SysUtils,
  glib2,
  Gtk2;

const
  clickme = 'Click Me';
  MAXLEN = 64;

var
  counter: integer = 0;

procedure clickedme(o: PGtkButton; d: pointer); cdecl;
  var
    nt: Pchar;
    l: PGtkLabel;
  begin
    l := Gtk_LABEL(d);
    inc(counter);
    nt := Pchar('You clicked me ' + inttostr(counter) + ' times');
    Gtk_label_set_text(l, nt);
  end;

var
  win:     PGtkWindow;
  button:  PGtkButton;
  Mylabel: PGtkLabel;
  vbox:    PGtkVBox;

begin
  Gtk_init(@argc, @argv);
  win := PGtkWindow(Gtk_window_new(Gtk_WINDOW_TOPLEVEL));
  Gtk_window_set_title(win, clickme);
  button := PGtkButton(Gtk_button_new_with_label(clickme));
  Mylabel := PGtkLabel(Gtk_label_new('There have been no clicks yet'));
  Gtk_label_set_single_line_mode(Mylabel, TRUE);
  vbox := PGtkVBox(Gtk_vbox_new(TRUE, 1));
  Gtk_container_add(Gtk_CONTAINER(vbox), Gtk_WIDGET(Mylabel));
  Gtk_container_add(Gtk_CONTAINER(vbox), Gtk_WIDGET(button));
  Gtk_container_add(Gtk_CONTAINER(win), Gtk_WIDGET(vbox));
  g_signal_connect(G_OBJECT(win), 'delete-event', TGCallBack(@Gtk_main_quit), NULL);
  g_signal_connect(G_OBJECT(button), 'clicked', TGCallBack(@clickedme), Mylabel);
  Gtk_widget_show_all(Gtk_WIDGET(win));
  Gtk_main();
end.</syntaxhighlight>

=={{header|Perl}}==
==={{libheader|Perl/Tk}}===
<syntaxhighlight lang="perl">use Tk;

$main = MainWindow->new;
$l = $main->Label('-text' => 'There have been no clicks yet.')->pack;
$count = 0;
$main->Button(
  -text => ' Click Me ',
  -command => sub { $l->configure(-text => 'Number of clicks: '.(++$count).'.'); },
)->pack;
MainLoop();</syntaxhighlight>

==={{libheader|GTK}} {{works with|Perl/Gtk}}===
<syntaxhighlight lang="perl">use Gtk '-init';

# Window.
$window = Gtk::Window->new;
$window->signal_connect('destroy' => sub { Gtk->main_quit; });

# VBox.
$vbox = Gtk::VBox->new(0, 0);
$window->add($vbox);

# Label.
$label = Gtk::Label->new('There have been no clicks yet.');
$vbox->add($label);

# Button.
$count = 0;
$button = Gtk::Button->new(' Click Me ');
$vbox->add($button);
$button->signal_connect('clicked', sub {
  $label->set_text(++$count);
});

# Show.
$window->show_all;

# Main loop.
Gtk->main;</syntaxhighlight>

=={{header|Phix}}==
{{libheader|Phix/basics}}
{{libheader|Phix/pGUI}}
{{libheader|Phix/online}}
You can run this online [http://phix.x10.mx/p2js/simplewindow.htm here].
<!--<syntaxhighlight lang="phix">(phixonline)-->
 <span style="color: #000080;font-style:italic;">-- demo\rosetta\Simple_window.exw</span>
 <span style="color: #008080;">with</span> <span style="color: #008080;">javascript_semantics</span>
 <span style="color: #008080;">include</span> <span style="color: #000000;">pGUI</span><span style="color: #0000FF;">.</span><span style="color: #000000;">e</span>
  
 <span style="color: #004080;">Ihandle</span> <span style="color: #000000;">dlg</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">lbl</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">btn</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">vbox</span>
 <span style="color: #004080;">integer</span> <span style="color: #000000;">clicks</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">0</span>
  
 <span style="color: #008080;">function</span> <span style="color: #000000;">click_cb</span><span style="color: #0000FF;">(</span><span style="color: #004080;">Ihandle</span> <span style="color: #000080;font-style:italic;">/*btn*/</span><span style="color: #0000FF;">)</span>
     <span style="color: #000000;">clicks</span> <span style="color: #0000FF;">+=</span> <span style="color: #000000;">1</span>
     <span style="color: #7060A8;">IupSetStrAttribute</span><span style="color: #0000FF;">(</span><span style="color: #000000;">lbl</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"TITLE"</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"clicked %d times"</span><span style="color: #0000FF;">,{</span><span style="color: #000000;">clicks</span><span style="color: #0000FF;">})</span>
     <span style="color: #008080;">return</span> <span style="color: #004600;">IUP_DEFAULT</span><span style="color: #0000FF;">;</span>
 <span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
  
 <span style="color: #7060A8;">IupOpen</span><span style="color: #0000FF;">()</span>
 <span style="color: #000000;">lbl</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">IupLabel</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"There have been no clicks yet"</span><span style="color: #0000FF;">)</span>
 <span style="color: #000000;">btn</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">IupButton</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"Click me"</span><span style="color: #0000FF;">,</span> <span style="color: #7060A8;">Icallback</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"click_cb"</span><span style="color: #0000FF;">))</span>
 <span style="color: #000000;">vbox</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">IupVbox</span><span style="color: #0000FF;">({</span><span style="color: #000000;">lbl</span><span style="color: #0000FF;">,</span> <span style="color: #7060A8;">IupHbox</span><span style="color: #0000FF;">({</span><span style="color: #7060A8;">IupFill</span><span style="color: #0000FF;">(),</span><span style="color: #000000;">btn</span><span style="color: #0000FF;">,</span><span style="color: #7060A8;">IupFill</span><span style="color: #0000FF;">()})})</span>
 <span style="color: #000000;">dlg</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">IupDialog</span><span style="color: #0000FF;">(</span><span style="color: #000000;">vbox</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"MARGIN=10x10, GAP=10, RASTERSIZE=400x0"</span><span style="color: #0000FF;">)</span>
 <span style="color: #7060A8;">IupSetAttribute</span><span style="color: #0000FF;">(</span><span style="color: #000000;">dlg</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"TITLE"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"Simple windowed application"</span><span style="color: #0000FF;">)</span>
 <span style="color: #7060A8;">IupShow</span><span style="color: #0000FF;">(</span><span style="color: #000000;">dlg</span><span style="color: #0000FF;">)</span>
 <span style="color: #008080;">if</span> <span style="color: #7060A8;">platform</span><span style="color: #0000FF;">()!=</span><span style="color: #004600;">JS</span> <span style="color: #008080;">then</span>
     <span style="color: #7060A8;">IupMainLoop</span><span style="color: #0000FF;">()</span>
     <span style="color: #7060A8;">IupClose</span><span style="color: #0000FF;">()</span>
 <span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
<!--</syntaxhighlight>-->
The above is cross platform, win/lnx, 32/64 bit, and runs in a browser. 
An older win32-only version can be found [[Simple_windowed_application/Arwen|here]].

=={{header|PicoLisp}}==
The standard PicoLisp GUI is HTTP based. Connect your browser to
http://localhost:8080 after starting the following script.
<syntaxhighlight lang="picolisp">#!/usr/bin/picolisp /usr/lib/picolisp/lib.l

(load "@ext.l" "@lib/http.l" "@lib/xhtml.l" "@lib/form.l")

(zero *Count)

(de start ()
   (app)
   (action
      (html 0 "Clicks" NIL NIL
         (form NIL
            (gui '(+Init +TextField) "There have been no clicks yet")
            (----)
            (gui '(+JS +Button) "click me"
               '(set> (field -1)
                  (pack "Clicked " (inc '*Count) " times") ) ) ) ) ) )

(server 8080 "!start")
(wait)</syntaxhighlight>

=={{header|Pike}}==
{{libheader|Gtk2}}
<syntaxhighlight lang="pike">GTK2.Widget mainwindow,clickcnt,clicker;
int clicks;

void click()
{
        clickcnt->set_text("Clicks: "+(++clicks));
}

int main()
{
        GTK2.setup_gtk();
        mainwindow=GTK2.Window(GTK2.WindowToplevel);
        mainwindow->set_title("Click counter");
        mainwindow->add(GTK2.Vbox(0,10)
                ->add(clickcnt=GTK2.Label("There have been no clicks yet"))
                ->add(clicker=GTK2.Button("Click me"))
        )->show_all();
        mainwindow->signal_connect("delete_event",lambda() {exit(0);});
        clicker->signal_connect("clicked",click);
        return -1;
}
</syntaxhighlight>

=={{header|PowerShell}}==
===Windows Forms===
{{works with|PowerShell|3}}
<syntaxhighlight lang="powershell">
$Label1  = [System.Windows.Forms.Label]@{
            Text = 'There have been no clicks yet'
            Size = '200, 20' }
$Button1 = [System.Windows.Forms.Button]@{
            Text = 'Click me'
            Location = '0, 20' }
 
$Button1.Add_Click(
    {
    $Script:Clicks++
    If ( $Clicks -eq 1 ) { $Label1.Text = "There has been 1 click" }
    Else                 { $Label1.Text = "There have been $Clicks clicks" }
    } )
 
$Form1 = New-Object System.Windows.Forms.Form
$Form1.Controls.AddRange( @( $Label1, $Button1 ) )
 
$Clicks = 0
 
$Result = $Form1.ShowDialog()
</syntaxhighlight>
{{works with|PowerShell|2}}
<syntaxhighlight lang="powershell">
Add-Type -AssemblyName System.Windows.Forms
 
$Label1 = New-Object System.Windows.Forms.Label
$Label1.Text = 'There have been no clicks yet'
$Label1.Size = '200, 20'
 
$Button1 = New-Object System.Windows.Forms.Button
$Button1.Text = 'Click me'
$Button1.Location = '0, 20'
 
$Button1.Add_Click(
    {
    $Script:Clicks++
    If ( $Clicks -eq 1 ) { $Label1.Text = "There has been 1 click" }
    Else                 { $Label1.Text = "There have been $Clicks clicks" }
    } )
 
$Form1 = New-Object System.Windows.Forms.Form
$Form1.Controls.AddRange( @( $Label1, $Button1 ) )
 
$Clicks = 0
 
$Result = $Form1.ShowDialog()
</syntaxhighlight>
===WPF===
<syntaxhighlight lang="powershell">
[xml]$Xaml = @"
<Window
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Name = "Window1"
    Width  = "200"
    Height = "120"
    ShowInTaskbar = "True">
    <StackPanel>
        <Label
            x:Name  = "Label1"
            Height  = "40"
            Width   = "200"
            Content = "There have been no clicks"/>
        <Button
            x:Name  = "Button1"
            Height  = "25"
            Width   = "60"
            Content = "Click me"/>
    </StackPanel>
</Window>
"@
 
$Window1 = [Windows.Markup.XamlReader]::Load( [System.Xml.XmlNodeReader]$Xaml )
 
$Label1  = $Window1.FindName( "Label1"  )
$Button1 = $Window1.FindName( "Button1" )
 
$Button1.Add_Click(
    {
    $Script:Clicks++
    If ( $Clicks -eq 1 ) { $Label1.Content = "There has been 1 click" }
    Else                 { $Label1.Content = "There have been $Clicks clicks" }
    } )
 
$Clicks = 0
 
$Result = $Window1.ShowDialog()
</syntaxhighlight>

=={{header|Processing}}==
<syntaxhighlight lang="java">
//Aamrun, 11th July 2022

int labelLeft = 100, labelTop = 100, labelWidth = 440, labelHeight = 100;

int labelTextLeft = 150, labelTextTop = 150;

int buttonLeft = 170, buttonTop = 230, buttonWidth = 300, buttonHeight = 100;

boolean hasBeenClicked = false;

int clicks = 0;


void setup(){
  size(640,480);
  fill(255);
  rect(labelLeft,labelTop,labelWidth,labelHeight);
  fill(0);
  textSize(30);
  text("There have been no clicks yet",labelTextLeft,labelTextTop);
  fill(#c0c0c0);
  rect(buttonLeft,buttonTop,buttonWidth,buttonHeight);
  fill(0);
  text("Click Me !", buttonLeft + 50,buttonTop + 50);
}

void mousePressed(){
  if(mouseX > buttonLeft && mouseX < buttonLeft + buttonWidth
      && mouseY > buttonTop && mouseY < buttonTop + buttonHeight){
        hasBeenClicked = true;
        clicks++;
      }
}

void draw(){
  if(hasBeenClicked == true){
    fill(255);
    rect(labelLeft,labelTop,labelWidth,labelHeight);
    fill(0);
    textSize(30);
    text("Clicks : " + str(clicks),labelTextLeft,labelTextTop);
  }
}


</syntaxhighlight>

=={{header|Prolog}}==
Works with SWI-Prolog and XPCE.
<syntaxhighlight lang="prolog">:- dynamic click/1.

dialog('Simple windowed application',
       [ object        :=
	   Simple_windowed_application,
	 parts         :=
	   [ Simple_windowed_application :=
	       dialog('Simple windowed application'),
	     Name                       :=
	       label(name, 'There have been no clicks yet'),
	     BtnClick                     :=
	       button(button)
	   ],
	 modifications :=
	   [ BtnClick := [ label := 'Click me !'
		       ]
	   ],
	 layout        :=
	   [ area(Name,
		  area(40, 20, 200, 18)),
	     area(BtnClick,
		  area(90, 60, 80, 24))
	   ],
	 behaviour :=
	 [
	  BtnClick := [message := message(@prolog, btnclick, Name)]
	 ]
       ]).

btnclick(Label) :-
	retract(click(V)),
	V1 is V+1,
	assert(click(V1)),
	sformat(A, '~w click(s)', [V1]),
	send(Label, selection, A).

simple_windowed :-
	retractall(click(_)),
	assert(click(0)),
	make_dialog(D, 'Simple windowed application'),
	send(D, open).

</syntaxhighlight>

=={{header|PureBasic}}==
<syntaxhighlight lang="purebasic">Define window_0
Define window_0_Text_0, window_0_Button_1
Define clicks, txt$, flags
 
flags = #PB_Window_SystemMenu | #PB_Window_SizeGadget | #PB_Window_ScreenCentered
window_0 = OpenWindow(#PB_Any, 408, 104, 280, 45, "Simple windowed application", flags)
If window_0
  SmartWindowRefresh(window_0, #True)
  window_0_Text_0 = TextGadget(#PB_Any, 5, 5, 165, 20, "There have been no clicks yet")
  window_0_Button_1 = ButtonGadget(#PB_Any, 190, 10, 85, 30, "Click me")

  Repeat
    Select WaitWindowEvent()
      Case #PB_Event_Gadget
        Select EventGadget()
          Case window_0_Text_0
          Case window_0_Button_1
            clicks + 1
            txt$ = "You Clicked " + Str(clicks) + " time"
            If clicks > 1: txt$ + "s": EndIf
            SetGadgetText(window_0_Text_0, txt$)
        EndSelect
      Case #PB_Event_CloseWindow
        End
    EndSelect
  ForEver
EndIf</syntaxhighlight>

=={{header|Python}}==

==={{libheader|Tkinter}}===
{{works with|Python|3.7}}
<syntaxhighlight lang="python">from functools import partial
import tkinter as tk

def on_click(label: tk.Label,
             counter: tk.IntVar) -> None:
    counter.set(counter.get() + 1)
    label["text"] = f"Number of clicks: {counter.get()}"

def main():
    window = tk.Tk()
    window.geometry("200x50+100+100")
    label = tk.Label(master=window,
                     text="There have been no clicks yet")
    label.pack()
    counter = tk.IntVar()
    update_counter = partial(on_click,
                             label=label,
                             counter=counter)
    button = tk.Button(master=window,
                       text="click me",
                       command=update_counter)
    button.pack()
    window.mainloop()

if __name__ == '__main__':
    main()
</syntaxhighlight>

The same in OO manner:
<syntaxhighlight lang="python">import tkinter as tk

class ClickCounter(tk.Frame):
    def __init__(self, master=None):
        super().__init__(master)
        tk.Pack.config(self)
        self.label = tk.Label(self, text='There have been no clicks yet')
        self.label.pack()
        self.button = tk.Button(self,
                                text='click me',
                                command=self.click)
        self.button.pack()
        self.count = 0

    def click(self):
        self.count += 1
        self.label['text'] = f'Number of clicks: {self.count}'


if __name__ == "__main__":
    ClickCounter().mainloop()
</syntaxhighlight>

==={{libheader|PyQt}}===
<syntaxhighlight lang="python">from functools import partial
from itertools import count

from PyQt5.QtWidgets import (QApplication,
                             QLabel,
                             QPushButton,
                             QWidget)
from PyQt5.QtCore import QRect

LABEL_GEOMETRY = QRect(0, 15, 200, 25)
BUTTON_GEOMETRY = QRect(50, 50, 100, 25)


def on_click(_, label, counter=count(1)):
    label.setText(f"Number of clicks: {next(counter)}")


def main():
    application = QApplication([])
    window = QWidget()
    label = QLabel(text="There have been no clicks yet",
                   parent=window)
    label.setGeometry(LABEL_GEOMETRY)
    button = QPushButton(text="click me",
                         parent=window)
    button.setGeometry(BUTTON_GEOMETRY)
    update_counter = partial(on_click,
                             label=label)
    button.clicked.connect(update_counter)
    window.show()
    application.lastWindowClosed.connect(window.close)
    application.exec_()


if __name__ == '__main__':
    main()
</syntaxhighlight>

==={{libheader|wxPython}}===
<syntaxhighlight lang="python">import wx


class ClickCounter(wx.Frame):
    def __init__(self):
        super().__init__(parent=None)
        self.count = 0
        self.button = wx.Button(parent=self,
                                label="Click me!")
        self.label = wx.StaticText(parent=self,
                                   label="There have been no clicks yet")
        self.Bind(event=wx.EVT_BUTTON,
                  handler=self.click,
                  source=self.button)

        self.sizer = wx.BoxSizer(wx.VERTICAL)
        self.sizer.Add(window=self.button,
                       proportion=1,
                       flag=wx.EXPAND)
        self.sizer.Add(window=self.label,
                       proportion=1,
                       flag=wx.EXPAND)
        self.SetSizer(self.sizer)
        self.sizer.Fit(self)

    def click(self, _):
        self.count += 1
        self.label.SetLabel(f"Count: {self.count}")


if __name__ == '__main__':
    app = wx.App()
    frame = ClickCounter()
    frame.Show()
    app.MainLoop()
</syntaxhighlight>

=={{header|R}}==
{{libheader|gWidgets}}

{{libheader|gWidgetstcltk}}

gWidgetsRGtk2 or gWidgetsrJava can be used as an alternative to gWidgetstcltk.
<syntaxhighlight lang="r">library(gWidgets)
library(gWidgetstcltk)
win <- gwindow()
lab <- glabel("There have been no clicks yet", container=win)
btn <- gbutton("click me", container=win, handle=function(h, ...) 
   {
      val <- as.numeric(svalue(lab))
      svalue(lab) <- ifelse(is.na(val) ,"1", as.character(val + 1))
   }
)</syntaxhighlight>

=={{header|Racket}}==

<syntaxhighlight lang="racket">
#lang racket/gui

(define frame (new frame% [label "There have been no clicks yet"]))

(define num-clicks 0)
(define (cb obj me)
  (set! num-clicks (add1 num-clicks))
  (send frame set-label (format "~a" num-clicks)))

(new button% [parent frame] [label "Click me"] [callback cb])
(send frame show #t)
</syntaxhighlight>

=={{header|Raku}}==
(formerly Perl 6)
{{libheader|GTK}}
<syntaxhighlight lang="raku" line>use GTK::Simple;
use GTK::Simple::App;

my GTK::Simple::App $app .= new(title => 'Simple Windowed Application');

$app.size-request(350, 100);

$app.set-content(
    GTK::Simple::VBox.new(
        my $label  = GTK::Simple::Label.new( text  => 'There have been no clicks yet'),
        my $button = GTK::Simple::Button.new(label => 'click me'),
    )
);

$app.border-width = 40;

$button.clicked.tap: { 
    state $clicks += 1;
    $label.text = "There has been $clicks click{ 's' if $clicks != 1 }";
}

$app.run;</syntaxhighlight>

=={{header|RapidQ}}==
RapidQ has form designer that produces RapidQ Basic source code. You can get the same result by writing the code yourself with a text editor. Then compile it either from within IDE or by using the command line compiler.

<syntaxhighlight lang="rapidq">DECLARE SUB buttonClick

CREATE form AS QForm
    Center
    Height = 120
    Width = 300

    CREATE text AS QLabel
        Caption = "There have been no clicks yet."
        Left = 30: Top = 20
    END CREATE

    CREATE button1 AS QButton
        Caption = "Click me"
        Left = 100: Top = 50: Height = 25: Width = 100
        OnClick = buttonClick
    END CREATE
END CREATE

SUB buttonClick
    STATIC count AS Integer
    count = count+1
    text.Caption = "Clicked " + STR$(count) + " times."
END SUB

form.ShowModal</syntaxhighlight>

=={{header|REBOL}}==
<syntaxhighlight lang="rebol">REBOL [
	Title: "Simple Windowed Application"
	URL: http://rosettacode.org/wiki/Simple_Windowed_Application
]

clicks: 0

; Simple GUI's in REBOL can be defined with 'layout', a
; special-purpose language (dialect, in REBOL-speak) for specifying
; interfaces. In the example below, I describe a gradient background
; with a text label and a button. The block in the button section
; details what should happen when it's clicked on -- increment the
; number of clicks and update the label text.

; The 'view' function paints the layout on the screen and listens for
; events. 

view layout [
	backdrop effect [gradient 0x1 black coal]

	label: vtext "There have been no clicks yet."

	button maroon "click me" [
		clicks: clicks + 1
		set-face label reform ["clicks:" clicks]
	]
]</syntaxhighlight>

=={{header|Red}}==
<syntaxhighlight lang="red">Red []

clicks: 0

view [
    t: text "There have been no clicks yet" return
    button "click me" [
        clicks: clicks + 1
        t/data: rejoin ["clicks: " clicks]
    ]
]</syntaxhighlight>

=={{header|Ring}}==
<syntaxhighlight lang="ring">
Load "guilib.ring"

MyApp = New qApp {
        num = 0
        win1 = new qWidget() {
               setwindowtitle("Hello World")
               setGeometry(100,100,370,250)

               btn1 = new qpushbutton(win1) {
                    setGeometry(150,200,100,30)
                    settext("click me")
                    setclickevent("clickme()")}

                    Lineedit1 = new qlineedit(win1) {
                                setGeometry(10,100,350,30)}
        show()}
        Exec()}

func clickme
     num += 1
     lineedit1.settext( "you clicked me " + num + " times")
</syntaxhighlight>
Output:

[[File:CalmoSoftWindow.jpg]]

=={{header|Ruby}}==
{{libheader|Ruby/Tk}}
<syntaxhighlight lang="ruby">require 'tk'
str = TkVariable.new("no clicks yet")
count = 0
root = TkRoot.new
TkLabel.new(root, "textvariable" => str).pack
TkButton.new(root) do
  text "click me"
  command {str.value = count += 1}
  pack
end
Tk.mainloop</syntaxhighlight>

{{libheader|Shoes}}
<syntaxhighlight lang="ruby">Shoes.app do
  stack do
    @count = 0
    @label = para "no clicks yet"
    button "click me" do 
      @count += 1
      @label.text = "click: #@count"
    end
  end
end</syntaxhighlight>

=={{header|Run BASIC}}==
<syntaxhighlight lang="runbasic">msg$ = "There have been no clicks yet"
[loop] cls                                        ' clear screen
print msg$
button #c, "Click Me", [clickMe]                  'create a button with handle and goto [tag]
wait

[clickMe]
clicks = clicks + 1
msg$ = "Button has been clicked ";clicks;" times"
goto [loop]</syntaxhighlight>

=={{header|Rust}}==
{{libheader|iced}}
<syntaxhighlight lang="rust">use iced::{ // 0.2.0
    button, Button, Column, Element, Length,
    Text, Sandbox, Settings, Space,
};

#[derive(Debug, Copy, Clone)]
struct Pressed;
struct Simple {
    value: i32,
    button: button::State,
}

impl Sandbox for Simple {
    type Message = Pressed;

    fn new() -> Simple {
        Simple {
            value: 0,
            button: button::State::new(),
        }
    }

    fn title(&self) -> String {
        "Simple Windowed Application".into()
    }

    fn view(&mut self) -> Element<Self::Message> {
        Column::new()
            .padding(20)
            .push({
                let text = match self.value {
                    0 => "there have been no clicks yet".into(),
                    1 => "there has been 1 click".into(),
                    n => format!("there have been {} clicks", n),
                };
                Text::new(text).size(24)
            }).push(
                Space::with_height(Length::Fill)
            ).push(
                Button::new(&mut self.button, Text::new("Click Me!"))
                    .on_press(Pressed)
            ).into()
    }

    fn update(&mut self, _: Self::Message) {
        self.value += 1;
    }
}

fn main() {
    let mut settings = Settings::default();
    settings.window.size = (600, 400);
    Simple::run(settings).unwrap();
}</syntaxhighlight>

=={{header|Scala}}==
{{libheader|Scala}}
<syntaxhighlight lang="scala">import scala.swing.{ BorderPanel, Button, Label, MainFrame, SimpleSwingApplication }
import scala.swing.event.ButtonClicked

object SimpleApp extends SimpleSwingApplication {
  def top = new MainFrame {
    contents = new BorderPanel {
      var nClicks = 0

      val (button, label) = (new Button { text = "click me" },
        new Label { text = "There have been no clicks yet" })

      layout(button) = BorderPanel.Position.South
      layout(label) = BorderPanel.Position.Center
      listenTo(button)
      reactions += {
        case ButtonClicked(_) =>
          nClicks += 1
          label.text = s"There have been ${nClicks} clicks"
      }
    }
  }
}</syntaxhighlight>


=={{header|Scratch}}==
<syntaxhighlight lang="scratch">
when flag clicked          # when program is run
set counter to "0"         # initialize counter object to zero
set message to "There have been no clicks"
show variable message      # show the message object

when this sprite clicked   # when button clicked
hide message               # hide the initial message
change counter by 1        # increment the counter object
</syntaxhighlight>

'''Comments and Description:'''<br>
The Scratch IDE has a GUI drag and drop interface.  
The program above is has both graphic and text objects.
The 'message' and 'counter' variables coded above are also graphic objects.  
They are set to "large readout" rather than slider or normal.
The (implied) 'sprite' has a 'costume' set to "button".

[https://www.melellington.com/simplewindow/scratchoutput.jpg  Scratch-Output]

=={{header|Sidef}}==
===Gtk2===
<syntaxhighlight lang="ruby">require('Gtk2') -> init

# Window.
var window = %s<Gtk2::Window>.new
window.signal_connect('destroy' => { %s<Gtk2>.main_quit })

# VBox.
var vbox = %s<Gtk2::VBox>.new(0, 0)
window.add(vbox)

# Label.
var label = %s<Gtk2::Label>.new('There have been no clicks yet.')
vbox.add(label)

# Button.
var count = 0
var button = %s<Gtk2::Button>.new(' Click Me ')
vbox.add(button)
button.signal_connect('clicked' => {
    label.set_text(++count)
})

# Show.
window.show_all

# Main loop.
%s<Gtk2>.main</syntaxhighlight>

===Gtk3===
<syntaxhighlight lang="ruby">use('Gtk3 -init')

# Window.
var window = %O'Gtk3::Window'.new
window.signal_connect('destroy' => { %O'Gtk3'.main_quit })

# VBox.
var vbox = %O'Gtk3::VBox'.new(0, 0)
window.add(vbox)

# Label.
var label = %O'Gtk3::Label'.new('There have been no clicks yet.')
vbox.add(label)

# Button.
var count = 0
var button = %O'Gtk3::Button'.new(' Click Me ');
vbox.add(button)
button.signal_connect('clicked' => {
    label.set_text(++count)
})

# Show.
window.show_all

# Main loop.
%O'Gtk3'.main</syntaxhighlight>

=={{header|Smalltalk}}==
{{works with|Smalltalk/X}}
<syntaxhighlight lang="smalltalk">|top clickCount lh button|

clickCount := 0.
lh := ValueHolder with:'There have been no clicks yet'.

top := StandardSystemView label:'Rosetta Simple Window'.
top extent:300@100.
top add:((Label new labelChannel:lh) origin: 0 @ 10 corner: 1.0 @ 40).
top add:((button := Button label:'Eat Me') origin: 10 @ 50 corner: 100 @ 80).

button action:[ 
        clickCount := clickCount + 1.
        lh value: ('number of clicks: %1' bindWith:clickCount) 
       ].

top open</syntaxhighlight>

=={{header|Standard ML}}==
Works with PolyML
<syntaxhighlight lang="standard ml">open XWindows ;
open Motif ;
 
val countWindow = fn () =>
 
 let
  val ctr   =  ref 0;
  val shell =  XtAppInitialise     ""    "demo" "top" [] [XmNwidth 300, XmNheight 150 ] ;
  val main  =  XmCreateMainWindow  shell    "main"       [XmNmappedWhenManaged true ] ;
  val frame =  XmCreateForm        main     "frame"      [XmNwidth 390, XmNheight 290 ] ;
  val text  =  XmCreateLabel       frame    "show"       [XmNlabelString "No clicks yet" ] ;
  val buttn =  XmCreateDrawnButton frame    "press"      [XmNwidth 75 , XmNheight 30 ,
                                            XmNlabelString "Click me" ,
                                            XmNbottomAttachment XmATTACH_POSITION,XmNbottomPosition 98 ] ;
  val report = fn (w,c,t)  =>
     (XtSetValues text [XmNlabelString (Int.toString (ctr:= !ctr +1; !ctr)) ] ; t )
 in
 
  (
   XtSetCallbacks   buttn      [ (XmNactivateCallback , report) ] XmNarmCallback ;
   XtManageChildren [ text,buttn ] ;
   XtManageChildren [ frame ] ;
   XtManageChild    main ;
   XtRealizeWidget  shell
  )
 
end;
</syntaxhighlight>
call
 countWindow () ;


=={{header|Tcl}}==
{{libheader|Tk}}
<syntaxhighlight lang="tcl">package require Tk
pack [label .l -text "There have been no clicks yet"]
set count 0
pack [button .b -text "click me" -command upd]
proc upd {} {
    .l configure -text "Number of clicks: [incr ::count]"
}</syntaxhighlight>

=={{header|TI-89 BASIC}}==

The Ti-89 does not have general onscreen buttons; this program uses the OK/Cancel choice of a dialog box to implement the UI.

<syntaxhighlight lang="ti89b">Prgm
  Local clicks
  0 → clicks
  1 → ok    © System variable also set by Dialog statement
  While ok = 1
    Dialog
      Title "Rosetta Code"
      Text "There have been " & string(clicks) & " OKs"
    EndDlog
    clicks + 1 → clicks
  EndWhile
EndPrgm</syntaxhighlight>

=={{header|Unicon}}==

<syntaxhighlight lang="unicon">
import gui
$include "guih.icn"

class SimpleApp : Dialog (label)

  # -- automatically called when the dialog is created
  method component_setup()
    # create and add the label
    label := Label("label=There have been no clicks yet","pos=50%,33%", "align=c,c")
    add (label)

    # create and add the button
    button := TextButton("label=Click me", "pos=50%,66%", "align=c,c")
    button.connect(self, "clicked", ACTION_EVENT)
    add (button)

    # some cosmetic settings for the window
    attrib("size=180,70", "bg=light gray")
  end

  method clicked ()
    static count := 0
    count +:= 1
    label.set_label ("Clicked " || count || " times")
  end
end

procedure main()
  local d := SimpleApp ()
  d.show_modal()
end
</syntaxhighlight>

=={{header|Vala}}==
<syntaxhighlight lang="vala">// GTK 4
public class Example : Gtk.Application {
  public Example() {
    Object(application_id: "my.application",
      flags: ApplicationFlags.FLAGS_NONE);
    activate.connect(() => {
      var window = new Gtk.ApplicationWindow(this);
      var box = new Gtk.Box(Gtk.Orientation.VERTICAL, 20);
      var label = new Gtk.Label("There have been no clicks yet");
      var button = new Gtk.Button.with_label("click me");
      var clicks = 0;
      button.clicked.connect(() => {
        clicks++;
        label.label = "Button clicked " + clicks.to_string() + " times";
      });
      box.append(label);
      box.append(button);
      window.set_child(box);
      window.present();
    });
  }
  public static int main(string[] argv) {
    return new Example().run(argv);
  }
}</syntaxhighlight>

=={{header|Vedit macro language}}==
<syntaxhighlight lang="vedit">Reg_Set(10, "There have been no clicks yet")
#1 = 0
repeat (ALL) {
    #2 = Dialog_Input_1(3, "`Simple Windowed Application`,
                        `|@(10)`,
                        `[&Click me]`,`[&Exit]`",
                        APP+CENTER, 0, 0) 
    if (#2 != 1) { break }    // ESC or Exit
    #1++
    Num_Str(#1, 10)
    Reg_Set(10, "Clicked", INSERT)
    Reg_Set(10, " times", APPEND)
}</syntaxhighlight>

=={{header|Visual Basic}}==
In VB, windows are usually created in the IDE. The generated code is hidden from the user unless viewed outside of VB. For the sake of this task, I have included that code, but normally it is hidden from the programmer.

<syntaxhighlight lang="vb">VERSION 5.00
Begin VB.Form Form2 
   Caption         =   "There have been no clicks yet"
   ClientHeight    =   2940
   ClientLeft      =   60
   ClientTop       =   600
   ClientWidth     =   8340
   LinkTopic       =   "Form1"
   ScaleHeight     =   2940
   ScaleWidth      =   8340
   StartUpPosition =   3  'Windows Default
   Begin VB.CommandButton Command1 
      Caption         =   "Click me!"
      Height          =   495
      Left            =   3600
      TabIndex        =   0
      Top             =   1200
      Width           =   1215
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
'-----user-written code begins here; everything above this line is hidden in the GUI-----
Private clicked As Long

Private Sub Command1_Click()
    clicked = clicked + 1
    Me.Caption = clicked & " clicks."
End Sub
</syntaxhighlight>

=={{header|V (Vlang)}}==
<syntaxhighlight lang="Zig">
import ui
import gx

[heap]
struct App {
	mut:
	window &ui.Window = unsafe {nil}
	counter string = "No clicks yet" // will contain number count
}

fn main() {
	mut app := &App{}
	app.window = ui.window(
		width: 200
		height: 40
		title: "Counter"
		mode: .resizable
		layout: ui.row(
			spacing: 5
			margin_: 10
			widths: ui.stretch
			heights: ui.stretch
			children: [
				ui.label(
					id: "num"
					text: &app.counter //refer to struct App
				),
				ui.button(
					text: "Click me"
					bg_color: gx.light_gray
					radius: 5
					border_color: gx.gray
					on_click: app.btn_click //refer to function below
				),
			]
		)
	)
	ui.run(app.window)
}

fn (mut app App) btn_click(btn &ui.Button) {
	mut lbl := app.window.get_or_panic[ui.Label]("num") //"num" is id of label
	app.counter = (app.counter.int() + 1).str() //change to string for label display
	lbl.set_text(app.counter)
}
</syntaxhighlight>

=={{header|Web 68}}==
<syntaxhighlight lang="web68">@1Introduction.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public Licence as published by
the Free Software Foundation, either version 3 of the Licence, or
(at your option) any later version.

Copyright (c) 2012 Sian Mountbatten.

@m cvs simpleapp = "$Id: $"

@a@<Prelude@>
BEGIN
@<Included declarations@>
@<Plain values in the outer reach@>
@<Names in the outer reach@>
@<Procedures in the outer reach@>
@<Logic in the outer reach@>
END
@<Postlude@>

@ The local compiler requires a special prelude.@^system dependencies@>

@<Prel...@>=
PROGRAM simpleapp CONTEXT VOID
USE @<Library preludes@>

@ And a special postlude.@^system dependencies@>

@<Post...@>=
FINISH

@ The program requires the predefined forms and the standard prelude.

@<Library...@>=
simpleapp fd,standard

@ This Web 68 file provides the Xforms prelude.

@iforms.w@>

@1Initialisation.
The initial processing consists of initialising the Xforms library.

@<Logic...@>=
open(argf,"",arg channel);
fl initialize(argc,argv,"simpleapp",NIL,0);

@ Declare the !REF FILE!.

@<Names...@>=
FILE @!argf;

@1Main processing.
The form is created in !simpleapp fd! the source code of which is 108 lines long.
Firstly, define the callback for the button.

@<Proc...@>=
button cb:=(REF FLOBJECT obj,INT data)VOID:
(
	clicks +:= 1;
	fl set object label(text box OF click form,whole(clicks,0)+" click"+
	                    (clicks=1|""|"s")+" on the button")
);

@ Declare !clicks!.

@<Plain...@>=
INT clicks:=0;

@ Create the form, show it and hand control to the Xforms library.

@<Logic...@>=
click form:=create form click;
fl show form(click OF click form,fl place center,fl full border,"SimpleApp");
fl do forms

@ Declare the form.

@<Names...@>=
REF FDCLICK click form;

@1Macro declarations.
All the macros used in the program are declared here.

@<Include...@>=
macro fl do forms;
macro fl initialize;
macro fl set object label;
macro fl show form;

@ To compile the program, use this command:
<pre>
   ca -l mod -l forms simpleapp.w68
</pre>
The predefined form will have been compiled with this command:
<pre>
   ca -m mod simpleappfd.w68
</pre>
The predefined form was created by the <b>fdesign</b> program for the Xforms library,
and the resulting form definition file was converted to Web 68 by the program
<b>fdtow68</b>.</syntaxhighlight>

=={{header|Wren}}==
{{libheader|DOME}}
<syntaxhighlight lang="wren">import "graphics" for Canvas, Color
import "input" for Mouse
import "dome" for Window

class SimpleWindowedApplication {
    construct new(width, height) {
        Window.title = "Simple windowed application"
        _fore = Color.white
        _clicks = 0
    }

    init() {
        drawControls()
    }

    update() {
        if (Mouse["left"].justPressed && insideButton) _clicks = _clicks + 1
    }

    draw(alpha) {
        drawControls()
    }

    insideButton {
        var p = Mouse.position
        return p.x >= 120 && p.x <= 200 && p.y >= 90 && p.y <= 170
    }

    drawControls() {
        Canvas.cls()
        if (_clicks == 0) {
            Canvas.print("There have been no clicks yet", 40, 40, _fore)
        } else if (_clicks == 1) {
            Canvas.print("The button has been clicked once", 30, 40, _fore)
        } else {
            Canvas.print("The button has been clicked %(_clicks) times", 10, 40, _fore)
        }
        Canvas.rectfill(120, 90, 80, 80, Color.red)
        Canvas.rect(120, 90, 80, 80, Color.blue)
        Canvas.print("click me", 130, 125, _fore)
    }
}

var Game = SimpleWindowedApplication.new(600, 600)</syntaxhighlight>

=={{header|XPL0}}==
<syntaxhighlight lang="xpl0">include c:\cxpl\stdlib;         \standard library provides mouse routines, etc.
def Ww=40, Wh=12, Wx=(80-Ww)/2, Wy=(25-Wh)/2;           \window width, etc.
def Bw=11, Bh=4, Bx=Wx+(Ww-Bw)/2, By=Wy+3*(Wh-Bh)/4;    \button size & position
int Clicks, Mx, My;             \number of clicks and mouse coordinates

[ShowCursor(false);                             \turn off flashing cursor
Attrib($1F);                                    \bright white characters on blue
SetWind(Wx, Wy, Wx+Ww, Wy+Wh, 2, true);         \blue window with no scroll
DrawBox(Wx, Wy, Wx+Ww, Wy+Wh, 3);               \draw borders
Cursor(Wx+5, Wy+3);  Text(6, "There have been no clicks yet.");
DrawBox(Bx, By, Bx+Bw, By+Bh, 0);               \draw button
Cursor(Bx+2, By+2);  Text(6, "Click me");

OpenMouse;
ShowMouse(true);
Clicks:= 0;
repeat  if GetMouseButton(0) then               \left button down
                [while GetMouseButton(0) do []; \wait for release
                Mx:= GetMousePosition(0) / 8;   \character coordinates
                My:= GetMousePosition(1) / 8;
                if Mx>=Bx & Mx<=Bx+Bw & My>=By & My<=By+Bh then
                        [Clicks:= Clicks+1;     \mouse pointer is on the button
                        Cursor(Wx+4, Wy+3);
                        Text(6, "Times button has been clicked: ");
                        IntOut(6, Clicks);
                        ];
                ];
until   ChkKey;         \keystroke terminates program
SetVid(3);              \turn off mouse and turn on flashing cursor
]</syntaxhighlight>

=={{header|Yorick}}==
Yorick does not include a GUI toolkit. However, it does provide a plotting system that can emulate some basic GUI features, such as buttons and labels. The above sample uses a built-in library "button.i", which is itself written in Yorick.

<syntaxhighlight lang="yorick">#include "button.i"

window, 0;
btn_click = Button(text="click me", x=.395, y=.65, dx=0.04368, dy=0.0091);
btn_quit = Button(text="quit", x=.395, y=.6, dx=0.02184, dy=0.0091);
count = 0;
msg = "There have been no clicks yet";
finished = 0;
do {
    fma;
    plt, msg, .395, .7, justify="CH";
    button_plot, btn_click;
    button_plot, btn_quit;
    xy = mouse(0, 0, "");
    if(button_test(btn_click, xy(1), xy(2))) {
        count++;
        msg = swrite(format="Number of clicks: %d", count);
    } else if(button_test(btn_quit, xy(1), xy(2))) {
        finished = 1;
        winkill, 0;
    }
} while(!finished);</syntaxhighlight>

{{omit from|ACL2}}
{{omit from|AWK}}
{{omit from|Batch File|Does not have access to GUI functions.}}
{{omit from|EasyLang}}
{{omit from|GUISS}}
{{omit from|Logtalk}}
{{omit from|Maxima}}
{{Omit From|Metafont}}
{{omit from|ML/I}}
{{omit from|PARI/GP}}
{{omit from|PHP}}
{{omit from|Retro}}
{{omit from|SQL PL|It does not handle GUI}}
{{omit from|ZX Spectrum Basic|Does not use a mouse}}