Window management
You are encouraged to solve this task according to the task description, using any language you may know.
Treat windows or at least window identities as first class objects.
- Store window identities in variables, compare them for equality.
- Provide examples of performing some of the following:
- hide,
- show,
- close,
- minimize,
- maximize,
- move, and
- resize a window.
The window of interest may or may not have been created by your program.
AutoHotkey
F1:: ;; when user hits the F1 key, do the following
WinGetTitle, window, A ; get identity of active window into a variable
WinMove, %window%, , 100, 100, 800, 800 ; move window to coordinates, 100, 100
; and change size to 800 x 800 pixels
sleep, 2000
WinHide, % window ; hide window
TrayTip, hidden, window is hidden, 2
sleep, 2000
WinShow, % window ; show window again
loop,
{
inputbox, name, what was the name of your window?
if (name = window) ; compare window variables for equality
{
msgbox you got it
break
}
; else try again
}
WinClose, % window
return
BBC BASIC
SWP_NOMOVE = 2
SWP_NOZORDER = 4
SW_MAXIMIZE = 3
SW_MINIMIZE = 6
SW_RESTORE = 9
SW_HIDE = 0
SW_SHOW = 5
REM Store window handle in a variable:
myWindowHandle% = @hwnd%
PRINT "Hiding the window in two seconds..."
WAIT 200
SYS "ShowWindow", myWindowHandle%, SW_HIDE
WAIT 200
SYS "ShowWindow", myWindowHandle%, SW_SHOW
PRINT "Windows shown again."
PRINT "Minimizing the window in two seconds..."
WAIT 200
SYS "ShowWindow", myWindowHandle%, SW_MINIMIZE
WAIT 200
SYS "ShowWindow", myWindowHandle%, SW_RESTORE
PRINT "Maximizing the window in two seconds..."
WAIT 200
SYS "ShowWindow", myWindowHandle%, SW_MAXIMIZE
WAIT 200
SYS "ShowWindow", myWindowHandle%, SW_RESTORE
PRINT "Now restored to its normal size."
PRINT "Resizing the window in two seconds..."
WAIT 200
SYS "SetWindowPos", myWindowHandle%, 0, 0, 0, 400, 200, \
\ SWP_NOMOVE OR SWP_NOZORDER
PRINT "Closing the window in two seconds..."
WAIT 200
QUIT
C
C does not have any standard windowing library, although cross platform libraries are available, and although it's technically possible to create windows from scratch given the Dark powers that C commands, I chose the simplest option, the Windows API. On running this program, the user is taken over all the sub tasks listed in this task one by one.
Windows
#include<windows.h>
#include<unistd.h>
#include<stdio.h>
const char g_szClassName[] = "weirdWindow";
LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
switch(msg)
{
case WM_CLOSE:
DestroyWindow(hwnd);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProc(hwnd, msg, wParam, lParam);
}
return 0;
}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
LPSTR lpCmdLine, int nCmdShow)
{
WNDCLASSEX wc;
HWND hwnd[3];
MSG Msg;
int i,x=0,y=0;
char str[3][100];
int maxX = GetSystemMetrics(SM_CXSCREEN), maxY = GetSystemMetrics(SM_CYSCREEN);
char messages[15][180] = {"Welcome to the Rosettacode Window C implementation.",
"If you can see two blank windows just behind this message box, you are in luck.",
"Let's get started....",
"Yes, you will be seeing a lot of me :)",
"Now to get started with the tasks, the windows here are stored in an array of type HWND, the array is called hwnd (yes, I know it's very innovative.)",
"Let's compare the windows for equality.",
"Now let's hide Window 1.",
"Now let's see Window 1 again.",
"Let's close Window 2, bye, bye, Number 2 !",
"Let's minimize Window 1.",
"Now let's maximize Window 1.",
"And finally we come to the fun part, watch Window 1 move !",
"Let's double Window 1 in size for all the good work.",
"That's all folks ! (You still have to close that window, that was not part of the contract, sue me :D )"};
wc.cbSize = sizeof(WNDCLASSEX);
wc.style = 0;
wc.lpfnWndProc = WndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hInstance;
wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
wc.lpszMenuName = NULL;
wc.lpszClassName = g_szClassName;
wc.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
if(!RegisterClassEx(&wc))
{
MessageBox(NULL, "Window Registration Failed!", "Error!",MB_ICONEXCLAMATION | MB_OK);
return 0;
}
for(i=0;i<2;i++){
sprintf(str[i],"Window Number %d",i+1);
hwnd[i] = CreateWindow(g_szClassName,str[i],WS_OVERLAPPEDWINDOW,i*maxX/2 , 0, maxX/2-10, maxY/2-10,NULL, NULL, hInstance, NULL);
if(hwnd[i] == NULL)
{
MessageBox(NULL, "Window Creation Failed!", "Error!",MB_ICONEXCLAMATION | MB_OK);
return 0;
}
ShowWindow(hwnd[i], nCmdShow);
UpdateWindow(hwnd[i]);
}
for(i=0;i<6;i++){
MessageBox(NULL, messages[i], "Info",MB_APPLMODAL| MB_ICONINFORMATION | MB_OK);
}
if(hwnd[0]==hwnd[1])
MessageBox(NULL, "Window 1 and 2 are equal.", "Info",MB_APPLMODAL| MB_ICONINFORMATION | MB_OK);
else
MessageBox(NULL, "Nope, they are not.", "Info",MB_APPLMODAL| MB_ICONINFORMATION | MB_OK);
MessageBox(NULL, messages[6], "Info",MB_APPLMODAL| MB_ICONINFORMATION | MB_OK);
ShowWindow(hwnd[0], SW_HIDE);
MessageBox(NULL, messages[7], "Info",MB_APPLMODAL| MB_ICONINFORMATION | MB_OK);
ShowWindow(hwnd[0], SW_SHOW);
MessageBox(NULL, messages[8], "Info",MB_APPLMODAL| MB_ICONINFORMATION | MB_OK);
ShowWindow(hwnd[1], SW_HIDE);
MessageBox(NULL, messages[9], "Info",MB_APPLMODAL| MB_ICONINFORMATION | MB_OK);
ShowWindow(hwnd[0], SW_MINIMIZE);
MessageBox(NULL, messages[10], "Info",MB_APPLMODAL| MB_ICONINFORMATION | MB_OK);
ShowWindow(hwnd[0], SW_MAXIMIZE);
MessageBox(NULL, messages[11], "Info",MB_APPLMODAL| MB_ICONINFORMATION | MB_OK);
ShowWindow(hwnd[0], SW_RESTORE);
while(x!=maxX/2||y!=maxY/2){
if(x<maxX/2)
x++;
if(y<maxY/2)
y++;
MoveWindow(hwnd[0],x,y,maxX/2-10, maxY/2-10,0);
sleep(10);
}
MessageBox(NULL, messages[12], "Info",MB_APPLMODAL| MB_ICONINFORMATION | MB_OK);
MoveWindow(hwnd[0],0,0,maxX, maxY,0);
MessageBox(NULL, messages[13], "Info",MB_APPLMODAL| MB_ICONINFORMATION | MB_OK);
while(GetMessage(&Msg, NULL, 0, 0) > 0)
{
TranslateMessage(&Msg);
DispatchMessage(&Msg);
}
return Msg.wParam;
}
FreeBASIC
#include "windows.bi"
Function WindowProc(Byval hWnd As HWND, Byval uMsg As UINT, Byval wParam As WPARAM, Byval lParam As LPARAM) As LRESULT
Select Case uMsg
Case WM_DESTROY
PostQuitMessage(0)
Return 0
Case Else
Return DefWindowProc(hWnd, uMsg, wParam, lParam)
End Select
End Function
Function CreateSimpleWindow(titulo As String, ancho As Integer, alto As Integer) As HWND
Dim As HWND hWnd
Dim As WNDCLASS wc
wc.style = CS_HREDRAW Or CS_VREDRAW
wc.lpfnWndProc = @WindowProc
wc.cbClsExtra = 0
wc.cbWndExtra = 0
wc.hInstance = GetModuleHandle(NULL)
wc.hIcon = LoadIcon(NULL, IDI_APPLICATION)
wc.hCursor = LoadCursor(NULL, IDC_ARROW)
wc.hbrBackground = GetStockObject(WHITE_BRUSH)
wc.lpszMenuName = NULL
wc.lpszClassName = @"SimpleWindowClass"
RegisterClass(@wc)
hWnd = CreateWindowEx(0, @"SimpleWindowClass", titulo, WS_OVERLAPPEDWINDOW, _
CW_USEDEFAULT, CW_USEDEFAULT, ancho, alto, NULL, NULL, _
GetModuleHandle(NULL), NULL)
ShowWindow(hWnd, SW_SHOW)
UpdateWindow(hWnd)
Return hWnd
End Function
Dim As HWND hWnd = CreateSimpleWindow("Rosetta code", 400, 300)
If hWnd = 0 Then
Print "Error: Could not create window.."
Else
Print "Let's go... "
Print "Show window"
ShowWindow(hWnd, SW_SHOW)
Sleep 1000
Print "Hide window"
ShowWindow(hWnd, SW_HIDE)
Sleep 1000
Print "Minimize window"
ShowWindow(hWnd, SW_MINIMIZE)
Sleep 1000
Print "Maximize window"
ShowWindow(hWnd, SW_MAXIMIZE)
Sleep 1000
Print "Restore window"
ShowWindow(hWnd, SW_RESTORE)
Sleep 1000
Print "Move window"
MoveWindow(hWnd, 100, 100, 800, 600, True)
Sleep 1000
Print "Resize the window"
MoveWindow(hWnd, 100, 100, 400, 300, True)
Sleep 1000
Print "Close window"
PostMessage(hWnd, WM_CLOSE, 0, 0)
End If
Dim uMsg As MSG
While GetMessage(@uMsg, NULL, NULL, NULL)
TranslateMessage(@uMsg)
DispatchMessage(@uMsg)
Wend
Print "That's all folks!"
- Output:
Let's go... Show window Hide window Minimize window Maximize window Restore window Move window Resize the window Close window That's all folks!
Gambas
sWindow As New String[4]
'________________________
Public Sub Form_Open()
Manipulate
End
'________________________
Public Sub Manipulate()
Dim siDelay As Short = 2
Me.Show
Print "Show"
Wait siDelay
sWindow[0] = Me.Width
sWindow[1] = Me.Height
sWindow[2] = Me.X
sWindow[3] = Me.y
Me.Hide
Print "Hidden"
CompareWindow
Wait siDelay
Me.Show
Print "Show"
CompareWindow
Wait siDelay
Me.Minimized = True
Print "Minimized"
CompareWindow
Wait siDelay
Me.Show
Print "Show"
CompareWindow
Wait siDelay
Me.Maximized = True
Print "Maximized"
CompareWindow
Wait siDelay
Me.Maximized = False
Print "Not Maximized"
CompareWindow
Wait siDelay
Me.Height = 200
Me.Width = 300
Print "Resized"
CompareWindow
Wait siDelay
Me.x = 10
Me.Y = 10
Print "Moved"
CompareWindow
Wait siDelay
Me.Close
End
'________________________
Public Sub CompareWindow()
Dim sNewWindow As New String[4]
Dim siCount As Short
Dim bMatch As Boolean = True
sNewWindow[0] = Me.Width
sNewWindow[1] = Me.Height
sNewWindow[2] = Me.X
sNewWindow[3] = Me.y
For siCount = 0 To 3
If sWindow[siCount] <> sNewWindow[siCount] Then bMatch = False
Next
If bMatch Then
Print "Windows identities match the original window size"
Else
Print "Windows identities DONOT match the original window size"
End If
End
Output:
Show Hidden Windows identities match the original window size Show Windows identities match the original window size Minimized Windows identities match the original window size Show Windows identities match the original window size Maximized Windows identities match the original window size Not Maximized Windows identities DONOT match the original window size Resized Windows identities DONOT match the original window size Moved Windows identities DONOT match the original window size
Go
package main
import (
"github.com/gotk3/gotk3/gtk"
"log"
"time"
)
func check(err error, msg string) {
if err != nil {
log.Fatal(msg, err)
}
}
func main() {
gtk.Init(nil)
window, err := gtk.WindowNew(gtk.WINDOW_TOPLEVEL)
check(err, "Unable to create window:")
window.SetResizable(true)
window.SetTitle("Window management")
window.SetBorderWidth(5)
window.Connect("destroy", func() {
gtk.MainQuit()
})
stackbox, err := gtk.BoxNew(gtk.ORIENTATION_VERTICAL, 10)
check(err, "Unable to create stack box:")
bmax, err := gtk.ButtonNewWithLabel("Maximize")
check(err, "Unable to create maximize button:")
bmax.Connect("clicked", func() {
window.Maximize()
})
bunmax, err := gtk.ButtonNewWithLabel("Unmaximize")
check(err, "Unable to create unmaximize button:")
bunmax.Connect("clicked", func() {
window.Unmaximize()
})
bicon, err := gtk.ButtonNewWithLabel("Iconize")
check(err, "Unable to create iconize button:")
bicon.Connect("clicked", func() {
window.Iconify()
})
bdeicon, err := gtk.ButtonNewWithLabel("Deiconize")
check(err, "Unable to create deiconize button:")
bdeicon.Connect("clicked", func() {
window.Deiconify()
})
bhide, err := gtk.ButtonNewWithLabel("Hide")
check(err, "Unable to create hide button:")
bhide.Connect("clicked", func() {
// not working on Ubuntu 16.04 but window 'dims' after a few seconds
window.Hide()
time.Sleep(10 * time.Second)
window.Show()
})
bshow, err := gtk.ButtonNewWithLabel("Show")
check(err, "Unable to create show button:")
bshow.Connect("clicked", func() {
window.Show()
})
bmove, err := gtk.ButtonNewWithLabel("Move")
check(err, "Unable to create move button:")
isShifted := false
bmove.Connect("clicked", func() {
w, h := window.GetSize()
if isShifted {
window.Move(w-10, h-10)
} else {
window.Move(w+10, h+10)
}
isShifted = !isShifted
})
bquit, err := gtk.ButtonNewWithLabel("Quit")
check(err, "Unable to create quit button:")
bquit.Connect("clicked", func() {
window.Destroy()
})
stackbox.PackStart(bmax, true, true, 0)
stackbox.PackStart(bunmax, true, true, 0)
stackbox.PackStart(bicon, true, true, 0)
stackbox.PackStart(bdeicon, true, true, 0)
stackbox.PackStart(bhide, true, true, 0)
stackbox.PackStart(bshow, true, true, 0)
stackbox.PackStart(bmove, true, true, 0)
stackbox.PackStart(bquit, true, true, 0)
window.Add(stackbox)
window.ShowAll()
gtk.Main()
}
HicEst
CHARACTER title="Rosetta Window_management"
REAL :: w=-333, h=25, x=1, y=0.5 ! pixels < 0, relative window size 0...1, script character size > 1
WINDOW(WINdowhandle=wh, Width=w, Height=h, X=x, Y=y, TItle=title) ! create, on return size/pos VARIABLES are set to script char
WINDOW(WIN=wh, MINimize) ! minimize
WINDOW(WIN=wh, SHowNormal) ! restore
WINDOW(WIN=wh, X=31, Y=7+4) !<-- move upper left here (col 31, row 7 + ~4 rows for title, menus, toolbar. Script window in upper left screen)
WINDOW(WIN=wh, MAXimize) ! maximize (hides the script window)
WINDOW(Kill=wh) ! close
END
Icon and Unicon
The demo program opens three windows, one with a running commentary on the action.
graphics.icn provides graphics
Java
Java cannot (easily) manipulate windows created by other programs. This code manipulates windows that it has created, but any window created in the same JVM can be controlled similarly. This example uses Swing - for AWT or SWT go figure.
import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.awt.Frame;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.lang.reflect.InvocationTargetException;
import javax.swing.AbstractAction;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
public class WindowController extends JFrame {
// Create UI on correct thread
public static void main( final String[] args ) {
EventQueue.invokeLater( () -> new WindowController() );
}
private JComboBox<ControlledWindow> list;
// Button class to call the right method
private class ControlButton extends JButton {
private ControlButton( final String name ) {
super(
new AbstractAction( name ) {
public void actionPerformed( final ActionEvent e ) {
try {
WindowController.class.getMethod( "do" + name )
.invoke ( WindowController.this );
} catch ( final Exception x ) { // poor practice
x.printStackTrace(); // also poor practice
}
}
}
);
}
}
// UI for controlling windows
public WindowController() {
super( "Controller" );
final JPanel main = new JPanel();
final JPanel controls = new JPanel();
setLocationByPlatform( true );
setResizable( false );
setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
setLayout( new BorderLayout( 3, 3 ) );
getRootPane().setBorder( new EmptyBorder( 3, 3, 3, 3 ) );
add( new JLabel( "Add windows and control them." ), BorderLayout.NORTH );
main.add( list = new JComboBox<>() );
add( main, BorderLayout.CENTER );
controls.setLayout( new GridLayout( 0, 1, 3, 3 ) );
controls.add( new ControlButton( "Add" ) );
controls.add( new ControlButton( "Hide" ) );
controls.add( new ControlButton( "Show" ) );
controls.add( new ControlButton( "Close" ) );
controls.add( new ControlButton( "Maximise" ) );
controls.add( new ControlButton( "Minimise" ) );
controls.add( new ControlButton( "Move" ) );
controls.add( new ControlButton( "Resize" ) );
add( controls, BorderLayout.EAST );
pack();
setVisible( true );
}
// These are the windows we're controlling, but any JFrame would do
private static class ControlledWindow extends JFrame {
private int num;
public ControlledWindow( final int num ) {
super( Integer.toString( num ) );
this.num = num;
setLocationByPlatform( true );
getRootPane().setBorder( new EmptyBorder( 3, 3, 3, 3 ) );
setDefaultCloseOperation( JFrame.DISPOSE_ON_CLOSE );
add( new JLabel( "I am window " + num + ". Use the controller to control me." ) );
pack();
setVisible( true );
}
public String toString() {
return "Window " + num;
}
}
// Here comes the useful bit - window control code
// Everything else was just to allow us to do this!
public void doAdd() {
list.addItem( new ControlledWindow( list.getItemCount () + 1 ) );
pack();
}
public void doHide() {
final JFrame window = getWindow();
if ( null == window ) {
return;
}
window.setVisible( false );
}
public void doShow() {
final JFrame window = getWindow();
if ( null == window ) {
return;
}
window.setVisible( true );
}
public void doClose() {
final JFrame window = getWindow();
if ( null == window ) {
return;
}
window.dispose();
}
public void doMinimise() {
final JFrame window = getWindow();
if ( null == window ) {
return;
}
window.setState( Frame.ICONIFIED );
}
public void doMaximise() {
final JFrame window = getWindow();
if ( null == window ) {
return;
}
window.setExtendedState( Frame.MAXIMIZED_BOTH );
}
public void doMove() {
final JFrame window = getWindow();
if ( null == window ) {
return;
}
final int hPos = getInt( "Horizontal position?" );
if ( -1 == hPos ) {
return;
}
final int vPos = getInt( "Vertical position?" );
if ( -1 == vPos ) {
return;
}
window.setLocation ( hPos, vPos );
}
public void doResize() {
final JFrame window = getWindow();
if ( null == window ) {
return;
}
final int width = getInt( "Width?" );
if ( -1 == width ) {
return;
}
final int height = getInt( "Height?" );
if ( -1 == height ) {
return;
}
window.setBounds ( window.getX(), window.getY(), width, height );
}
private JFrame getWindow() {
final JFrame window = ( JFrame ) list.getSelectedItem();
if ( null == window ) {
JOptionPane.showMessageDialog( this, "Add a window first" );
}
return window;
}
private int getInt(final String prompt) {
final String s = JOptionPane.showInputDialog( prompt );
if ( null == s ) {
return -1;
}
try {
return Integer.parseInt( s );
} catch ( final NumberFormatException x ) {
JOptionPane.showMessageDialog( this, "Not a number" );
return -1;
}
}
}
Julia
Uses the Gtk windowing package, so the package can manage Gtk's windows.
using Gtk
function controlwindow(win, lab)
sleep(4)
set_gtk_property!(lab, :label, "Hiding...")
sleep(1)
println("Hiding widow")
set_gtk_property!(win, :visible, false)
sleep(5)
set_gtk_property!(lab, :label, "Showing...")
println("Showing window")
set_gtk_property!(win, :visible, true)
sleep(5)
set_gtk_property!(lab, :label, "Resizing...")
println("Resizing window")
resize!(win, 300, 300)
sleep(4)
set_gtk_property!(lab, :label, "Maximizing...")
println("Maximizing window")
sleep(1)
maximize(win)
set_gtk_property!(lab, :label, "Closing...")
sleep(5)
println("Closing window")
destroy(win)
sleep(2)
exit(0)
end
function runwindow()
win = GtkWindow("Window Control Test", 500, 30) |> (GtkFrame() |> (vbox = GtkBox(:v)))
lab = GtkLabel("Window under external control")
push!(vbox, lab)
@async(controlwindow(win, lab))
cond = Condition()
endit(w) = notify(cond)
signal_connect(endit, win, :destroy)
showall(win)
wait(cond)
end
runwindow()
Mathematica /Wolfram Language
Mathematica can only easily access and control windows created by itself.
nb=NotebookCreate[]; (*Create a window and store in a variable*)
nb===nb2 (*test for equality with another window object*)
SetOptions[nb,Visible->False](*Hide*)
SetOptions[nb,Visible->True](*Show*)
NotebookClose[nb] (*Close*)
SetOptions[nb,WindowMargins->{{x,Automatic},{y,Automatic}}](*Move to x,y screen position*)
SetOptions[nb,WindowSize->{100,100}](*Resize*)
Nim
import os
import gintro/[glib, gobject, gtk, gio]
from gintro/gdk import processAllUpdates
type MyWindow = ref object of ApplicationWindow
isShifted: bool
#---------------------------------------------------------------------------------------------------
proc wMaximize(button: Button; window: MyWindow) =
window.maximize()
proc wUnmaximize(button: Button; window: MyWindow) =
window.unmaximize()
proc wIconify(button: Button; window: MyWindow) =
window.iconify()
proc wDeiconify(button: Button; window: MyWindow) =
window.deiconify()
proc wHide(button: Button; window: MyWindow) =
window.hide()
processAllUpdates()
os.sleep(2000)
window.show()
proc wShow(button: Button; window: MyWindow) =
window.show()
proc wMove(button: Button; window: MyWindow) =
var x, y: int
window.getPosition(x, y)
if window.isShifted:
window.move(x - 10, y - 10)
else:
window.move(x + 10, y + 10)
window.isShifted = not window.isShifted
proc wQuit(button: Button; window: MyWindow) =
window.destroy()
#---------------------------------------------------------------------------------------------------
proc activate(app: Application) =
## Activate the application.
let window = newApplicationWindow(MyWindow, app)
window.setTitle("Window management")
let stackBox = newBox(Orientation.vertical, 10)
stackBox.setHomogeneous(true)
let
bMax = newButton("maximize")
bUnmax = newButton("unmaximize")
bIcon = newButton("iconize")
bDeicon = newButton("deiconize")
bHide = newButton("hide")
bShow = newButton("show")
bMove = newButton("move")
bQuit = newButton("Quit")
for button in [bMax, bUnmax, bIcon, bDeicon, bHide, bShow, bMove, bQuit]:
stackBox.add button
window.setBorderWidth(5)
window.add(stackBox)
discard bMax.connect("clicked", wMaximize, window)
discard bUnmax.connect("clicked", wUnmaximize, window)
discard bIcon.connect("clicked", wIconify, window)
discard bDeicon.connect("clicked", wDeiconify, window)
discard bHide.connect("clicked", wHide, window)
discard bShow.connect("clicked", wShow, window)
discard bMove.connect("clicked", wMove, window)
discard bQuit.connect("clicked", wQuit, window)
window.showAll()
#———————————————————————————————————————————————————————————————————————————————————————————————————
let app = newApplication(Application, "Rosetta.Window.Management")
discard app.connect("activate", activate)
discard app.run()
import os
import gdk2, glib2, gtk2
proc thisDestroy(widget: PWidget; data: Pgpointer) {.cdecl.} =
main_quit()
proc thisMax(widget: PWidget; data: Pgpointer) {.cdecl.} =
widget.get_parent_window().maximize()
proc thisUnmax(widget: PWidget; data: Pgpointer) {.cdecl.} =
widget.get_parent_window().unmaximize()
proc thisIcon(widget: PWidget; data: Pgpointer) {.cdecl.} =
widget.get_parent_window().iconify()
proc thisDeicon(widget: PWidget; data: Pgpointer) {.cdecl.} =
widget.get_parent_window().deiconify()
proc thisHide(widget: PWidget; data: Pgpointer) {.cdecl.} =
widget.get_parent_window().hide()
window_process_all_updates()
sleep(2000)
widget.get_parent_window().show()
proc thisShow(widget: PWidget; data: Pgpointer) {.cdecl.} =
widget.get_parent_window().show()
var isShifted = false
proc thisMove(widget: PWidget; data: Pgpointer) {.cdecl.} =
var x, y: gint
widget.get_parent_window().get_position(addr(x), addr(y))
if isshifted:
widget.get_parent_window().move(x - 10, y - 10)
else:
widget.get_parent_window().move(x + 10, y + 10)
isShifted = not isShifted
nim_init()
let window = window_new(gtk2.WINDOW_TOPLEVEL)
discard window.allow_grow()
window.set_title("Window management")
let
stackbox = vbox_new(true, 10)
bMax = button_new("maximize")
bUnmax = button_new("unmaximize")
bIcon = button_new("iconize")
bDeicon = button_new("deiconize")
bHide = button_new("hide")
bShow = button_new("show")
bMove = button_new("move")
bQuit = button_new("Quit")
stackbox.pack_start(bMax, true, true, 0)
stackbox.pack_start(bUnmax, true, true, 0)
stackbox.pack_start(bIcon, true, true, 0)
stackbox.pack_start(bDeicon, true, true, 0)
stackbox.pack_start(bHide, true, true, 0)
stackbox.pack_start(bShow, true, true, 0)
stackbox.pack_start(bMove, true, true, 0)
stackbox.pack_start(bQuit, true, true, 0)
window.set_border_width(5)
window.add(stackbox)
discard window.signal_connect("destroy", SIGNAL_FUNC(thisDestroy), nil)
discard bIcon.signal_connect("clicked", SIGNAL_FUNC(thisIcon), nil)
discard bDeicon.signal_connect("clicked", SIGNAL_FUNC(thisDeicon), nil)
discard bMax.signal_connect("clicked", SIGNAL_FUNC(thisMax), nil)
discard bUnmax.signal_connect("clicked", SIGNAL_FUNC(thisUnmax), nil)
discard bHide.signal_connect("clicked", SIGNAL_FUNC(thisHide), nil)
discard bShow.signal_connect("clicked", SIGNAL_FUNC(thisShow), nil)
discard bMove.signal_connect("clicked", SIGNAL_FUNC(thismove), nil)
discard bQuit.signal_connect("clicked", SIGNAL_FUNC(thisDestroy), nil)
window.show_all()
main()
import iup
# assumes you have the iup .dll or .so installed
proc toCB(fp: proc): ICallback =
return cast[ICallback](fp)
discard iup.open(nil,nil)
var btnRestore = button("restore","")
var btnFull = button("Full screen","")
var btnMin = button("minimize","")
var btnMax = button("maximize","")
var btnHide = button("Transparent","")
#var btnHide = button("Hide (close)","")
var btnShow = button("Show","")
var hbox = Hbox(btnRestore, btnFull, btnMax, btnMin, btnShow, btnHide, nil)
setAttribute(hbox,"MARGIN", "10x10")
setAttribute(hbox,"PADDING", "5x5")
var dlg = Dialog(hbox)
#SetAttribute(dlg, "SIZE", "100x50")
proc doFull(ih:PIhandle): cint {.cdecl.} =
setAttribute(dlg,"FULLSCREEN","YES")
return IUP_DEFAULT
proc doMax(ih:PIhandle): cint {.cdecl.} =
#setAttribute(dlg,"FULLSCREEN","YES")
setAttribute(dlg,"PLACEMENT","MAXIMIZED")
# this is a work-around to get the dialog minimised (on win platform)
setAttribute(dlg,"VISIBLE","YES")
return IUP_DEFAULT
proc doMin(ih:PIhandle): cint {.cdecl.} =
setAttribute(dlg,"PLACEMENT","MINIMIZED")
# this is a work-around to get the dialog minimised (on win platform)
setAttribute(dlg,"VISIBLE","YES")
return IUP_DEFAULT
proc doRestore(ih:PIhandle): cint {.cdecl.} =
setAttribute(dlg,"OPACITY","255")
setAttribute(dlg,"FULLSCREEN","NO")
setAttribute(dlg,"PLACEMENT","NORMAL")
setAttribute(dlg,"VISIBLE","YES")
return IUP_DEFAULT
proc doHide(ih:PIhandle): cint {.cdecl.} =
#setAttribute(dlg,"VISIBLE","NO")
setAttribute(dlg,"OPACITY","60")
return IUP_DEFAULT
proc doShow(ih:PIhandle): cint {.cdecl.} =
setAttribute(dlg,"OPACITY","255")
setAttribute(dlg,"VISIBLE","YES")
return IUP_DEFAULT
discard setCallback(btnRestore,"ACTION", toCB(doRestore))
discard setCallback(btnFull,"ACTION", toCB(doFull))
discard setCallback(btnMax,"ACTION", toCB(doMax))
discard setCallback(btnMin,"ACTION", toCB(doMin))
discard setCallback(btnShow,"ACTION", toCB(doShow))
discard setCallback(btnHide,"ACTION", toCB(doHide))
discard dlg.show()
discard mainloop()
iup.Close()
Oz
We use QTk, Oz' default GUI toolkit. QTk takes a declarative description of the GUI and from this creates objects which represent the GUI parts. So windows are represented by objects and thus have an identity.
We create two windows with a simple GUI. The user can use each window to send messages to the window or its neighboring window. (Sending messages is the same as 'calling methods' in Oz.)
We also wrap the Window objects in a procedure in order to extend their functionality. This is interesting because it shows how to extend an object's interface even when we don't have control over object creation.
declare
[QTk] = {Module.link ['x-oz://system/wp/QTk.ozf']}
%% The messages that can be sent to the windows.
WindowActions =
[hide show close
iconify deiconify
maximize restore
set(minsize:minsize(width:400 height:400))
set(minsize:minsize(width:200 height:200))
set(geometry:geometry(x:0 y:0))
set(geometry:geometry(x:500 y:500))
]
%% Two windows, still uninitialized.
Windows = windows(window1:_
window2:_)
fun {CreateWindow}
Message = {NewCell WindowActions.1}
ReceiverName = {NewCell {Arity Windows}.1}
fun {ButtonText}
"Send"#" "#{ValueToString @Message}#" to "#@ReceiverName
end
Button
Desc =
td(title:"Window Management"
lr(listbox(init:{Arity Windows}
glue:nswe
tdscrollbar:true
actionh:proc {$ W}
ReceiverName := {GetSelected W}
{Button set(text:{ButtonText})}
end
)
listbox(init:{Map WindowActions ValueToString}
glue:nswe
tdscrollbar:true
actionh:proc {$ A}
Message := {GetSelected A}
{Button set(text:{ButtonText})}
end
)
glue:nswe
)
button(text:{ButtonText}
glue:we
handle:Button
action:proc {$}
{Windows.@ReceiverName @Message}
end
)
)
Window = {Extend {QTk.build Desc}}
in
{Window show}
Window
end
%% Adds two methods to a toplevel instance.
%% For maximize and restore we have to interact directly with Tk
%% because that functionality is not part of the QTk library.
fun {Extend Toplevel}
proc {$ A}
case A of maximize then
{Tk.send wm(state Toplevel zoomed)}
[] restore then
{Tk.send wm(state Toplevel normal)}
else
{Toplevel A}
end
end
end
%% Returns the current entry of a listbox
%% as an Oz value.
fun {GetSelected LB}
Entries = {LB get($)}
Index = {LB get(firstselection:$)}
in
{Compiler.virtualStringToValue {Nth Entries Index}}
end
fun {ValueToString V}
{Value.toVirtualString V 100 100}
end
in
{Record.forAll Windows CreateWindow}
Perl
This is a translation of the Tcl solution for this task.
The preferred way of using Tk with perl is through the (relatively modern) Tkx module, not the (quite old) Tk module (also known as perl/tk), which my code uses.
I wrote the code using the Tk module, as that's what I had on my computer, and I was too lazy to install Tkx. Translating from perl/tk to Tkx should be fairly trivial.
#!perl
use strict;
use warnings;
use Tk;
my $mw;
my $win;
my $lab;
# How to open a window.
sub openWin {
if( $win ) {
$win->deiconify;
$win->wm('state', 'normal');
} else {
eval { $win->destroy } if $win;
$win = $mw->Toplevel;
$win->Label(-text => "This is the window being manipulated")
->pack(-fill => 'both', -expand => 1);
$lab->configure(-text => "The window object is:\n$win");
}
}
# How to close a window
sub closeWin {
return unless $win;
$win->destroy;
$lab->configure(-text => '');
undef $win;
}
# How to minimize a window
sub minimizeWin {
return unless $win;
$win->iconify;
}
# How to maximize a window
sub maximizeWin {
return unless $win;
$win->wm('state', 'zoomed');
eval { $win->wmAttribute(-zoomed => 1) }; # Hack for X11
}
# How to move a window
sub moveWin {
return unless $win;
my ($x, $y) = $win->geometry() =~ /\+(\d+)\+(\d+)\z/ or die;
$_ += 10 for $x, $y;
$win->geometry("+$x+$y");
}
# How to resize a window
sub resizeWin {
return unless $win;
my ($w, $h) = $win->geometry() =~ /^(\d+)x(\d+)/ or die;
$_ += 10 for $w, $h;
$win->geometry($w . "x" . $h);
}
$mw = MainWindow->new;
for my $label0 ($mw->Label(-text => 'Window handle:')) {
$lab = $mw->Label(-text => '');
$label0->grid($lab);
}
my @binit = ('Open/Restore' => \&openWin, Close => \&closeWin,
Minimize => \&minimizeWin, Maximize => \&maximizeWin,
Move => \&moveWin, Resize => \&resizeWin);
while( my ($text, $callback) = splice @binit, 0, 2 ) {
$mw->Button(-text => $text, -command => $callback)->grid('-');
}
MainLoop();
__END__
In the Tcl code I translated from, the second label of the main window had a textvariable attribute. For some reason, this didn't work correctly for me, either due to a bug in Tk.pm, or some other reason. Because of that, I kept around a handle to that second label ($lab), and called configure on it when I needed it's text to change.
Doubtless some more modern Tk binding (such as Tkx, or perhaps Tcl::Tk) would handle that better.
Phix
-- demo\rosetta\Window_management.exw include pGUI.e Ihandle dlg function doFull(Ihandle /*ih*/) IupSetAttribute(dlg,"FULLSCREEN","YES") return IUP_DEFAULT end function function doMax(Ihandle /*ih*/) IupSetAttribute(dlg,"PLACEMENT","MAXIMIZED") -- this is a work-around to get the dialog minimised (on win platform) IupSetAttribute(dlg,"VISIBLE","YES") return IUP_DEFAULT end function function doMin(Ihandle /*ih*/) IupSetAttribute(dlg,"PLACEMENT","MINIMIZED") -- this is a work-around to get the dialog minimised (on win platform) IupSetAttribute(dlg,"VISIBLE","YES") return IUP_DEFAULT end function function doRestore(Ihandle /*ih*/) IupSetAttribute(dlg,"OPACITY","255") IupSetAttribute(dlg,"FULLSCREEN","NO") IupSetAttribute(dlg,"PLACEMENT","NORMAL") IupSetAttribute(dlg,"VISIBLE","YES") return IUP_DEFAULT end function function doDim(Ihandle /*ih*/) IupSetAttribute(dlg,"OPACITY","60") return IUP_DEFAULT end function function doShow(Ihandle /*ih*/) IupSetAttribute(dlg,"OPACITY","255") return IUP_DEFAULT end function function doMove(Ihandle /*ih*/) integer {x,y} = IupGetIntInt(dlg,"SCREENPOSITION") integer shift = iff(IupGetInt(NULL,"SHIFTKEY")?-10,+10) IupShowXY(dlg,x+shift,y+shift) return IUP_DEFAULT end function procedure main() IupOpen() Ihandle hbox = IupHbox({IupButton("restore", Icallback("doRestore")), IupButton("full screen",Icallback("doFull")), IupButton("maximize", Icallback("doMax")), IupButton("minimize", Icallback("doMin")), IupButton("dim", Icallback("doDim")), IupButton("show", Icallback("doShow")), IupButton("move", Icallback("doMove"))}) IupSetAttribute(hbox,"MARGIN", "10x10") IupSetAttribute(hbox,"PADDING", "5x5") dlg = IupDialog(hbox) IupSetAttribute(dlg,"OPACITY","255") IupShowXY(dlg,IUP_CENTER,IUP_CENTER) if platform()!=JS then IupMainLoop() IupClose() end if end procedure main()
PicoLisp
The following works on ErsatzLisp, the Java version of PicoLisp.
$ ersatz/pil +
: (setq
JFrame "javax.swing.JFrame"
MAXIMIZED_BOTH (java (public JFrame 'MAXIMIZED_BOTH))
ICONIFIED (java (public JFrame 'ICONIFIED))
Win (java JFrame T "Window") )
-> $JFrame
# Compare for equality
: (== Win Win)
-> T
# Set window visible
(java Win 'setLocation 100 100)
(java Win 'setSize 400 300)
(java Win 'setVisible T)
# Hide window
(java Win 'hide)
# Show again
(java Win 'setVisible T)
# Move window
(java Win 'setLocation 200 200)
# Iconify window
(java Win 'setExtendedState
(| (java (java Win 'getExtendedState)) ICONIFIED) )
# De-conify window
(java Win 'setExtendedState
(& (java (java Win 'getExtendedState)) (x| (hex "FFFFFFFF") ICONIFIED)) )
# Maximize window
(java Win 'setExtendedState
(| (java (java Win 'getExtendedState)) MAXIMIZED_BOTH) )
# Close window
(java Win 'dispose)
PureBasic
;- Create a linked list to store created windows.
NewList Windows()
Define i, j, dh, dw, flags, err$, x, y
;- Used sub-procedure to simplify the error handling
Procedure HandleError(Result, Text.s,ErrorLine=0,ExitCode=0)
If Not Result
MessageRequester("Error",Text)
End ExitCode
EndIf
ProcedureReturn Result
EndProcedure
;- Window handling procedures
Procedure Minimize(window)
SetWindowState(window,#PB_Window_Minimize)
EndProcedure
Procedure Normalize(window)
SetWindowState(window,#PB_Window_Normal)
EndProcedure
;- Get enviroment data
HandleError(ExamineDesktops(), "Failed to examine you Desktop.")
dh=HandleError(DesktopHeight(0),"Could not retrieve DesktopHight")/3
dw=HandleError(DesktopWidth(0), "Could not retrieve DesktopWidth")/3
;- Now, creating 9 windows
flags=#PB_Window_SystemMenu
err$="Failed to open Window"
For i=0 To 8
j=HandleError(OpenWindow(#PB_Any,i*10,i*10+30,10,10,Str(i),flags),err$)
SmartWindowRefresh(j, 1)
AddElement(Windows())
Windows()=j
Next i
Delay(1000)
;- Call a sub-routine for each Window stored in the list.
ForEach Windows()
Minimize(Windows())
Next
Delay(1000)
;- and again
ForEach Windows()
Normalize(Windows())
Next
Delay(1000)
;- Spread them evenly
ForEach Windows()
ResizeWindow(Windows(),x*dw,y*dh,dw-15,dh-35)
x+1
If x>2
x=0: y+1
EndIf
Next
Delay(2000)
End
Python
Using the tkinter GUI:
from tkinter import *
import tkinter.messagebox
def maximise():
"""get screenwidth and screenheight, and resize window to that size.
Also move to 0,0"""
root.geometry("{}x{}+{}+{}".format(root.winfo_screenwidth(), root.winfo_screenheight(), 0, 0))
def minimise():
"""Iconify window to the taskbar. When reopened, the window is
unfortunately restored to its original state, NOT its most recent state."""
root.iconify()
def delete():
"""create a modal dialog. If answer is "OK", quit the program"""
if tkinter.messagebox.askokcancel("OK/Cancel","Are you sure?"):
root.quit()
root = Tk()
mx=Button(root,text="maximise",command=maximise)
mx.grid()
mx.bind(maximise)
mn=Button(root,text="minimise",command=minimise)
mn.grid()
mn.bind(minimise)
#catch exit events, including "X" on title bar.
root.protocol("WM_DELETE_WINDOW",delete)
mainloop()
Racket
#lang racket/gui
(define (say . xs) (printf ">>> ~a\n" (apply ~a xs)) (flush-output))
(define frame (new frame% [label "Demo"] [width 400] [height 400]))
(say "frame = " frame) ; plain value
(say 'Show) (send frame show #t) (sleep 1)
(say 'Hide) (send frame show #f) (sleep 1)
(say 'Show) (send frame show #t) (sleep 1)
(say 'Minimize) (send frame iconize #t) (sleep 1)
(say 'Restore) (send frame iconize #f) (sleep 1)
(say 'Maximize) (send frame maximize #t) (sleep 1)
(say 'Restore) (send frame maximize #f) (sleep 1)
(say 'Move) (send frame move 100 100) (sleep 1)
(say 'Resize) (send frame resize 100 100) (sleep 1)
(say 'Close) (send frame show #f) (sleep 1) ; that's how we close a window
Raku
(formerly Perl 6)
This are generic window handling routines. They work for any window managed by the X11 display server, not just windows created by the program.
use X11::libxdo;
my $xdo = Xdo.new;
say 'Visible windows:';
printf "Class: %-21s ID#: %10d pid: %5d Name: %s\n", $_<class ID pid name>
for $xdo.get-windows.sort(+*.key)».value;
sleep 2;
my $id = $xdo.get-active-window;
my ($w, $h ) = $xdo.get-window-size( $id );
my ($wx, $wy) = $xdo.get-window-location( $id );
my ($dw, $dh) = $xdo.get-desktop-dimensions( 0 );
$xdo.move-window( $id, 150, 150 );
$xdo.set-window-size( $id, 350, 350, 0 );
sleep .25;
for flat 1 .. $dw - 350, $dw - 350, {$_ - 1} … 1 -> $mx { #
my $my = (($mx / $dw * τ).sin * 500).abs.Int;
$xdo.move-window( $id, $mx, $my );
$xdo.activate-window($id);
}
sleep .25;
$xdo.move-window( $id, 150, 150 );
my $dx = $dw - 300;
my $dy = $dh - 300;
$xdo.set-window-size( $id, $dx, $dy, 0 );
sleep .25;
my $s = -1;
loop {
$dx += $s * ($dw / 200).ceiling;
$dy += $s * ($dh / 200).ceiling;
$xdo.set-window-size( $id, $dx, $dy, 0 );
$xdo.activate-window($id);
sleep .005;
$s *= -1 if $dy < 200;
last if $dx >= $dw;
}
sleep .25;
$xdo.set-window-size( $id, $w, $h, 0 );
$xdo.move-window( $id, $wx, $wy );
$xdo.activate-window($id);
sleep .25;
$xdo.minimize($id);
$xdo.activate-window($id);
sleep 1;
$xdo.raise-window($id);
sleep .25;
Ring
Load "guilib.ring"
/*
+--------------------------------------------------------------------------
+ Program Name : ScreenDrawOnReSize.ring
+ Date : 2016.06.16
+ Author : Bert Mariani
+ Purpose : Re-Draw Chart after ReSize or move
+--------------------------------------------------------------------------
*/
###-------------------------------
### DRAW CHART size 1000 x 1000
###
###------------------------------
### Window Size
WinLeft = 80 ### 80 Window position on screen
WinTop = 80 ### 80 Window position on screen
WinWidth = 1000 ### 1000 Window Size - Horizontal-X WinWidth
WinHeight = 750 ### 750 Window Size - Vertical-Y WinHeight
WinRight = WinLeft + WinWidth ### 1080
WinBottom = WinTop + WinHeight ### 830
### Label Box Size
BoxLeft = 40 ### Start corner Label1 Box Start Position inside WIN1
BoxTop = 40 ### Start corner
BoxWidth = WinWidth -80 ### End corner Label1 Box Size
BoxHeight = WinHeight -80 ### End corner
###----------------------------
New qapp {
win1 = new qwidget() {
### Position and Size of WINDOW on the Screen
setwindowtitle("DrawChart using QPainter")
setgeometry( WinLeft, WinTop, WinWidth, WinHeight)
win1{ setwindowtitle("Initial Window Position: " +" L " + WinLeft +" T " + WinTop +" Width" + width() +" Height " + height() ) }
### ReSizeEvent ... Call WhereAreWe function
myfilter = new qallevents(win1)
myfilter.setResizeEvent("WhereAreWe()")
installeventfilter(myfilter)
### Draw within this BOX
label1 = new qlabel(win1) {
setgeometry(BoxLeft, BoxTop, BoxWidth, BoxHeight)
settext("We are Here")
}
### Button Position and Size ... Call DRAW function
new qpushbutton(win1) {
setgeometry( 30, 30, 80, 20)
settext("Draw")
setclickevent("Draw()")
}
###---------------
show()
}
exec()
}
###-----------------
### FUNCTION Draw
###-----------------
Func WhereAreWe
Rec = win1.framegeometry()
WinWidth = win1.width() ### 1000 Current Values
WinHeight = win1.height() ### 750
WinLeft = Rec.left() +8 ### <<< QT FIX because of Win Title
WinTop = Rec.top() +30 ### <<< QT FIX because of Win Title
WinRight = Rec.right()
WinBottom = Rec.bottom()
BoxWidth = WinWidth -80 ### 950
BoxHeight = WinHeight -80 ### 700
win1{ setwindowtitle("Window ReSize: Win " + WinWidth + "x" + WinHeight + " --- Box " + BoxWidth + "x" + BoxHeight +
" --- LT " + WinLeft + "-" + WinTop + " --- RB " + WinRight + "-" + WinBottom ) }
See "We Are Here - setResizeEvent - "
See " Win " + WinWidth + "x" + WinHeight + " --- Box " + BoxWidth + "x" + BoxHeight
See " --- LT " + Winleft + "-" + WinTop + " --- RB " + WinRight + "-" + WinBottom +nl
win1.setgeometry( WinLeft, WinTop, WinWidth, WinHeight )
label1.setgeometry( BoxLeft, BoxTop, BoxWidth, BoxHeight )
return
Func Draw
win1{ setwindowtitle("Draw Position: Win " + WinWidth + "x" + WinHeight + " --- Box " + BoxWidth + "x" + BoxHeight +
" --- LT " + WinLeft + "-" + WinTop + " --- RB " + WinRight + "-" + WinBottom ) }
See "Draw Position: " + WinWidth + "x" + WinHeight + " --- Box " + BoxWidth + "x" + BoxHeight +
" --- LT " + WinLeft + "-" + WinTop + " --- RB " + WinRight + "-" + WinBottom + nl
# ##-----------------------------
### PEN Colors
p1 = new qpicture()
colorBlue = new qcolor() { setrgb(0, 0,255,255) }
penBlue = new qpen() { setcolor(colorBlue) setwidth(1) }
###-----------------------
### PAINT the Chart
new qpainter() {
begin(p1)
setpen(penBlue)
###---------------------
### Draw Line Chart
drawline( 1 , 1 , BoxWidth , 1 ) ### WinTop line horizonal
drawline( 1 , 1 , 1 , BoxHeight ) ### WinLeft Line vetical
drawline( 1 , BoxHeight , BoxWidth , BoxHeight ) ### Bottom Line horizontal
drawline( BoxWidth , 1 , BoxWidth , BoxHeight ) ### WinRight Line vertical
drawline( BoxWidth / 2 , 1 , BoxWidth / 2 , BoxHeight ) ### Central vertical
drawline( 1 , BoxHeight / 2 , BoxWidth , BoxHeight / 2 ) ### Central horizontal
###--------------------------------------------------
endpaint()
}
label1 { setpicture(p1) show() }
return
###--------------------------------------------
Tcl
package require Tk
# How to open a window
proc openWin {} {
global win
if {[info exists win] && [winfo exists $win]} {
# Already existing; just reset
wm deiconify $win
wm state $win normal
return
}
catch {destroy $win} ;# Squelch the old one
set win [toplevel .t]
pack [label $win.label -text "This is the window being manipulated"] \
-fill both -expand 1
}
# How to close a window
proc closeWin {} {
global win
if {[info exists win] && [winfo exists $win]} {
destroy $win
}
}
# How to minimize a window
proc minimizeWin {} {
global win
if {[info exists win] && [winfo exists $win]} {
wm state $win iconic
}
}
# How to maximize a window
proc maximizeWin {} {
global win
if {[info exists win] && [winfo exists $win]} {
wm state $win zoomed
catch {wm attribute $win -zoomed 1} ;# Hack for X11
}
}
# How to move a window
proc moveWin {} {
global win
if {[info exists win] && [winfo exists $win]} {
scan [wm geometry $win] "%dx%d+%d+%d" width height x y
wm geometry $win +[incr x 10]+[incr y 10]
}
}
# How to resize a window
proc resizeWin {} {
global win
if {[info exists win] && [winfo exists $win]} {
scan [wm geometry $win] "%dx%d+%d+%d" width height x y
wm geometry $win [incr width 10]x[incr height 10]
}
}
grid [label .l -text "Window handle:"] [label .l2 -textvariable win]
grid [button .b1 -text "Open/Reset" -command openWin] -
grid [button .b2 -text "Close" -command closeWin] -
grid [button .b3 -text "Minimize" -command minimizeWin] -
grid [button .b4 -text "Maximize" -command maximizeWin] -
grid [button .b5 -text "Move" -command moveWin] -
grid [button .b6 -text "Resize" -command resizeWin] -
Wren
An embedded application so we can use the Gtk3 toolkit.
The following just manipulates a window created by the application itself and works fine on Ubuntu 22.04.
/* Window_management.wren */
var GTK_WINDOW_TOPLEVEL = 0
var GTK_ORIENTATION_VERTICAL = 1
var GTK_BUTTONBOX_CENTER = 5
foreign class GtkWindow {
construct new(type) {}
foreign title=(title)
foreign setDefaultSize(width, height)
foreign add(widget)
foreign connectDestroy()
foreign showAll()
foreign iconify()
foreign deiconify()
foreign maximize()
foreign unmaximize()
foreign move(x, y)
foreign resize(width, height)
foreign hide()
foreign destroy()
}
foreign class GtkButtonBox {
construct new(orientation) {}
foreign spacing=(interval)
foreign layout=(layoutStyle)
foreign add(button)
}
foreign class GtkButton {
construct newWithLabel(label) {}
foreign connectClicked()
}
class Gdk {
foreign static flush()
}
class C {
foreign static sleep(secs)
}
var Window = GtkWindow.new(GTK_WINDOW_TOPLEVEL)
Window.title = "Window management"
Window.setDefaultSize(400, 400)
Window.connectDestroy()
class GtkCallbacks {
static btnClicked(label) {
if (label == "Minimize") {
Window.iconify()
} else if (label == "Unminimize") {
Window.deiconify()
} else if (label == "Maximize") {
Window.maximize()
} else if (label == "Unmaximize") {
Window.unmaximize()
} else if (label == "Move") {
Window.move(0, 0) // move to top left hand corner of display
} else if (label == "Resize") {
Window.resize(600, 600)
} else if (label == "Hide") {
Window.hide()
Gdk.flush()
C.sleep(5) // wait 5 seconds
Window.showAll()
} else if (label == "Close") {
Window.destroy()
}
}
}
var buttonBox = GtkButtonBox.new(GTK_ORIENTATION_VERTICAL)
buttonBox.spacing = 20
buttonBox.layout = GTK_BUTTONBOX_CENTER
Window.add(buttonBox)
var btnMin = GtkButton.newWithLabel("Minimize")
btnMin.connectClicked()
buttonBox.add(btnMin)
var btnUnmin = GtkButton.newWithLabel("Unminimize")
btnUnmin.connectClicked()
buttonBox.add(btnUnmin)
var btnMax = GtkButton.newWithLabel("Maximize")
btnMax.connectClicked()
buttonBox.add(btnMax)
var btnUnmax = GtkButton.newWithLabel("Unmaximize")
btnUnmax.connectClicked()
buttonBox.add(btnUnmax)
var btnMove = GtkButton.newWithLabel("Move")
btnMove.connectClicked()
buttonBox.add(btnMove)
var btnResize = GtkButton.newWithLabel("Resize")
btnResize.connectClicked()
buttonBox.add(btnResize)
var btnHide = GtkButton.newWithLabel("Hide")
btnHide.connectClicked()
buttonBox.add(btnHide)
var btnClose = GtkButton.newWithLabel("Close")
btnClose.connectClicked()
buttonBox.add(btnClose)
Window.showAll()
We now embed the above script in the following C program, build and run.
/* gcc `pkg-config --cflags gtk+-3.0` -DGDK_VERSION_MIN_REQIRED=GDK_VERSION_3_2 Window_management.c -o Window_management `pkg-config --libs gtk+-3.0` -lwren -lm */
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <gtk/gtk.h>
#include <unistd.h>
#include "wren.h"
/* C <=> Wren interface functions */
WrenVM *vm;
static void btnClicked(GtkWidget *button, gpointer user_data) {
const gchar *label = gtk_button_get_label(GTK_BUTTON(button));
wrenEnsureSlots(vm, 2);
wrenGetVariable(vm, "main", "GtkCallbacks", 0);
WrenHandle *method = wrenMakeCallHandle(vm, "btnClicked(_)");
wrenSetSlotString(vm, 1, (const char *)label);
wrenCall(vm, method);
wrenReleaseHandle(vm, method);
}
void C_gtkWindowAllocate(WrenVM* vm) {
GtkWidget **window = (GtkWidget **)wrenSetSlotNewForeign(vm, 0, 0, sizeof(GtkWidget*));
GtkWindowType type = (GtkWindowType)wrenGetSlotDouble(vm, 1);
*window = gtk_window_new(type);
}
void C_gtkButtonBoxAllocate(WrenVM* vm) {
GtkWidget **buttonBox = (GtkWidget **)wrenSetSlotNewForeign(vm, 0, 0, sizeof(GtkWidget*));
GtkOrientation orientation = (GtkOrientation)wrenGetSlotDouble(vm, 1);
*buttonBox = gtk_button_box_new(orientation);
}
void C_gtkButtonAllocate(WrenVM* vm) {
GtkWidget **button = (GtkWidget **)wrenSetSlotNewForeign(vm, 0, 0, sizeof(GtkWidget*));
const gchar *label = (const gchar *)wrenGetSlotString(vm, 1);
*button = gtk_button_new_with_label(label);
}
void C_setTitle(WrenVM* vm) {
GtkWidget **window = (GtkWidget **)wrenGetSlotForeign(vm, 0);
const gchar *title = (const gchar *)wrenGetSlotString(vm, 1);
gtk_window_set_title(GTK_WINDOW(*window), title);
}
void C_setDefaultSize(WrenVM* vm) {
GtkWidget **window = (GtkWidget **)wrenGetSlotForeign(vm, 0);
gint width = (gint)wrenGetSlotDouble(vm, 1);
gint height = (gint)wrenGetSlotDouble(vm, 2);
gtk_window_set_default_size(GTK_WINDOW(*window), width, height);
}
void C_add(WrenVM* vm) {
GtkWidget **container = (GtkWidget **)wrenGetSlotForeign(vm, 0);
GtkWidget **widget = (GtkWidget **)wrenGetSlotForeign(vm, 1);
gtk_container_add(GTK_CONTAINER(*container), *widget);
}
void C_connectDestroy(WrenVM* vm) {
GtkWidget **window = (GtkWidget **)wrenGetSlotForeign(vm, 0);
g_signal_connect(*window, "destroy", G_CALLBACK(gtk_main_quit), NULL);
}
void C_showAll(WrenVM* vm) {
GtkWidget **window = (GtkWidget **)wrenGetSlotForeign(vm, 0);
gtk_widget_show_all(*window);
}
void C_iconify(WrenVM* vm) {
GtkWidget **window = (GtkWidget **)wrenGetSlotForeign(vm, 0);
gtk_window_iconify(GTK_WINDOW(*window));
}
void C_deiconify(WrenVM* vm) {
GtkWidget **window = (GtkWidget **)wrenGetSlotForeign(vm, 0);
gtk_window_deiconify(GTK_WINDOW(*window));
}
void C_maximize(WrenVM* vm) {
GtkWidget **window = (GtkWidget **)wrenGetSlotForeign(vm, 0);
gtk_window_maximize(GTK_WINDOW(*window));
}
void C_unmaximize(WrenVM* vm) {
GtkWidget **window = (GtkWidget **)wrenGetSlotForeign(vm, 0);
gtk_window_unmaximize(GTK_WINDOW(*window));
}
void C_move(WrenVM* vm) {
GtkWidget **window = (GtkWidget **)wrenGetSlotForeign(vm, 0);
gint x = (gint)wrenGetSlotDouble(vm, 1);
gint y = (gint)wrenGetSlotDouble(vm, 2);
gtk_window_move(GTK_WINDOW(*window), x, y);
}
void C_resize(WrenVM* vm) {
GtkWidget **window = (GtkWidget **)wrenGetSlotForeign(vm, 0);
gint width = (gint)wrenGetSlotDouble(vm, 1);
gint height = (gint)wrenGetSlotDouble(vm, 2);
gtk_window_resize(GTK_WINDOW(*window), width, height);
}
void C_hide(WrenVM* vm) {
GtkWidget **window = (GtkWidget **)wrenGetSlotForeign(vm, 0);
gtk_widget_hide(*window);
}
void C_destroy(WrenVM* vm) {
GtkWidget **window = (GtkWidget **)wrenGetSlotForeign(vm, 0);
gtk_widget_destroy(*window);
}
void C_setSpacing(WrenVM* vm) {
GtkWidget **buttonBox = (GtkWidget **)wrenGetSlotForeign(vm, 0);
gint spacing = (gint)wrenGetSlotDouble(vm, 1);
gtk_box_set_spacing(GTK_BOX(*buttonBox), spacing);
}
void C_setLayout(WrenVM* vm) {
GtkWidget **buttonBox = (GtkWidget **)wrenGetSlotForeign(vm, 0);
GtkButtonBoxStyle layoutStyle = (GtkButtonBoxStyle)wrenGetSlotDouble(vm, 1);
gtk_button_box_set_layout(GTK_BUTTON_BOX(*buttonBox), layoutStyle);
}
void C_connectClicked(WrenVM* vm) {
GtkWidget **button = (GtkWidget **)wrenGetSlotForeign(vm, 0);
g_signal_connect(*button, "clicked", G_CALLBACK(btnClicked), NULL);
}
void C_flush(WrenVM* vm) {
gdk_display_flush(gdk_display_get_default());
}
void C_sleep(WrenVM* vm) {
unsigned int secs = (unsigned int)wrenGetSlotDouble(vm, 1);
sleep(secs);
}
WrenForeignClassMethods bindForeignClass(WrenVM* vm, const char* module, const char* className) {
WrenForeignClassMethods methods;
methods.allocate = NULL;
methods.finalize = NULL;
if (strcmp(module, "main") == 0) {
if (strcmp(className, "GtkWindow") == 0) {
methods.allocate = C_gtkWindowAllocate;
} else if (strcmp(className, "GtkButtonBox") == 0) {
methods.allocate = C_gtkButtonBoxAllocate;
} else if (strcmp(className, "GtkButton") == 0) {
methods.allocate = C_gtkButtonAllocate;
}
}
return methods;
}
WrenForeignMethodFn bindForeignMethod(
WrenVM* vm,
const char* module,
const char* className,
bool isStatic,
const char* signature) {
if (strcmp(module, "main") == 0) {
if (strcmp(className, "GtkWindow") == 0) {
if (!isStatic && strcmp(signature, "title=(_)") == 0) return C_setTitle;
if (!isStatic && strcmp(signature, "setDefaultSize(_,_)") == 0) return C_setDefaultSize;
if (!isStatic && strcmp(signature, "add(_)") == 0) return C_add;
if (!isStatic && strcmp(signature, "connectDestroy()") == 0) return C_connectDestroy;
if (!isStatic && strcmp(signature, "showAll()") == 0) return C_showAll;
if (!isStatic && strcmp(signature, "iconify()") == 0) return C_iconify;
if (!isStatic && strcmp(signature, "deiconify()") == 0) return C_deiconify;
if (!isStatic && strcmp(signature, "maximize()") == 0) return C_maximize;
if (!isStatic && strcmp(signature, "unmaximize()") == 0) return C_unmaximize;
if (!isStatic && strcmp(signature, "move(_,_)") == 0) return C_move;
if (!isStatic && strcmp(signature, "resize(_,_)") == 0) return C_resize;
if (!isStatic && strcmp(signature, "hide()") == 0) return C_hide;
if (!isStatic && strcmp(signature, "destroy()") == 0) return C_destroy;
} else if (strcmp(className, "GtkButtonBox") == 0) {
if (!isStatic && strcmp(signature, "spacing=(_)") == 0) return C_setSpacing;
if (!isStatic && strcmp(signature, "layout=(_)") == 0) return C_setLayout;
if (!isStatic && strcmp(signature, "add(_)") == 0) return C_add;
} else if (strcmp(className, "GtkButton") == 0) {
if (!isStatic && strcmp(signature, "connectClicked()") == 0) return C_connectClicked;
} else if (strcmp(className, "Gdk") == 0) {
if (isStatic && strcmp(signature, "flush()") == 0) return C_flush;
} else if (strcmp(className, "C") == 0) {
if (isStatic && strcmp(signature, "sleep(_)") == 0) return C_sleep;
}
}
return NULL;
}
static void writeFn(WrenVM* vm, const char* text) {
printf("%s", text);
}
void errorFn(WrenVM* vm, WrenErrorType errorType, const char* module, const int line, const char* msg) {
switch (errorType) {
case WREN_ERROR_COMPILE:
printf("[%s line %d] [Error] %s\n", module, line, msg);
break;
case WREN_ERROR_STACK_TRACE:
printf("[%s line %d] in %s\n", module, line, msg);
break;
case WREN_ERROR_RUNTIME:
printf("[Runtime Error] %s\n", msg);
break;
}
}
char *readFile(const char *fileName) {
FILE *f = fopen(fileName, "r");
fseek(f, 0, SEEK_END);
long fsize = ftell(f);
rewind(f);
char *script = malloc(fsize + 1);
fread(script, 1, fsize, f);
fclose(f);
script[fsize] = 0;
return script;
}
int main(int argc, char **argv) {
gtk_init(&argc, &argv);
WrenConfiguration config;
wrenInitConfiguration(&config);
config.writeFn = &writeFn;
config.errorFn = &errorFn;
config.bindForeignClassFn = &bindForeignClass;
config.bindForeignMethodFn = &bindForeignMethod;
vm = wrenNewVM(&config);
const char* module = "main";
const char* fileName = "Window_management.wren";
char *script = readFile(fileName);
WrenInterpretResult result = wrenInterpret(vm, module, script);
switch (result) {
case WREN_RESULT_COMPILE_ERROR:
printf("Compile Error!\n");
break;
case WREN_RESULT_RUNTIME_ERROR:
printf("Runtime Error!\n");
break;
case WREN_RESULT_SUCCESS:
break;
}
gtk_main();
wrenFreeVM(vm);
free(script);
return 0;
}
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