Cross-platform get gadget at position

BlitzMax Forums/MaxGUI Module/Cross-platform get gadget at position

JoshK

(Posted 2010) [#1]

I need a way to retrieve the hwnd/whatever at a position on the screen, in order to implement some drag and drop functionality. In Windows I can use WindowFromPoint(). Is there an equivalent command on MacOS and Linux?

Here's my code for Windows. This works, although it does not tell you which item in a treeview is picked. The coordinates have to be in screen coordinates:

SuperStrict

Import maxgui.drivers

?win32
Import pub.win32
?

?win32
Extern "win32"
	Function WindowFromPoint:Int(x:Int,y:Int)
EndExtern
?

?win32
Function GetGadgetFromHwnd:TGadget(hwnd:Int)
	Return TGadget(TWindowsGUIDriver.GadgetMap.valueforkey(TIntWrapper.Create(hwnd)))
EndFunction
?

Function GetGadgetAtPosition:TGadget(x:Int,y:Int)
	?win32
	Return GetGadgetFromHwnd(WindowFromPoint(x,y))
	?
EndFunction

Last edited 2010

Last edited 2010