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GUI enabling/disabling of controls: Difference between revisions
GUI enabling/disabling of controls (view source)
Revision as of 14:59, 25 December 2016
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}
}</lang>
=={{header|FreeBASIC}}==
<lang FreeBASIC>
#Include "windows.bi"
Dim As HWND Window_Main, Edit_Number, Button_Inc, Button_Dec
Dim As MSG msg
Dim As Integer n
Dim As String text
'Create a window with an input field and two buttons:
Window_Main = CreateWindow("#32770", "GUI Enabling/Disabling of Controls", WS_OVERLAPPEDWINDOW Or WS_VISIBLE, 100, 100, 250, 200, 0, 0, 0, 0)
Var Static_Number = CreateWindow("STATIC", "Value:", WS_VISIBLE Or WS_CHILD, 10, 10, 100, 20, Window_Main, 0, 0, 0)
Edit_Number = CreateWindow("EDIT", "0", WS_BORDER Or WS_VISIBLE Or WS_CHILD Or ES_AUTOHSCROLL Or ES_Number, 110, 10, 100, 20, Window_Main, 0, 0, 0)
Button_Inc = CreateWindow("BUTTON", "Increment", WS_VISIBLE Or WS_CHILD, 110, 40, 100, 20, Window_Main, 0, 0, 0)
Button_Dec = CreateWindow("BUTTON", "Decrement", WS_VISIBLE Or WS_CHILD, 110, 70, 100, 20, Window_Main, 0, 0, 0)
'Windows message loop:
While GetMessage(@msg, Window_Main, 0, 0)
text = Space(GetWindowTextLength(Edit_Number) + 1) 'Buffer for the text
GetWindowText(Edit_Number, text, Len(text))
n = Val(text)
If n <> 0 Then EnableWindow(Edit_Number, False) Else EnableWindow(Edit_Number, True)
If n > 9 Then EnableWindow(Button_Inc, False) Else EnableWindow(Button_Inc, True)
If n > 0 Then EnableWindow(Button_Dec, True) Else EnableWindow(Button_Dec, False)
TranslateMessage(@msg)
DispatchMessage(@msg)
Select Case msg.hwnd
Case Button_Inc
'Increment value:
If msg.message = WM_LBUTTONDOWN Then SetWindowText(Edit_Number, Str(n + 1))
Case Button_Dec
'Decrement value:
If msg.message = WM_LBUTTONDOWN Then SetWindowText(Edit_Number, Str(n - 1))
Case Window_Main
If msg.message = WM_COMMAND Then End
End Select
Wend
End
</lang>
==Icon and {{header|Unicon}}==
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