AutoIT - Create selection rectangle within a GUI

[Renderer]

Hello guys, I've got a small problem. I want to create a selection rectangle within a GUI like in paint. Here's the code I've written, but it doesn't work, unfortunately:

 

#include <misc.au3>

global $hWin = GUICreate("Selection rectangle",650,550)
GUISetState()

while 1
    Switch GUIGetMsg()
        case -3
            exitloop
    endswitch
   
    if _IsPressed("1") then
        $mp = GUIGetCursorInfo($hWin)
        $dot = GUICtrlCreateGraphic($mp[0],$mp[1],2,2)
        GUICtrlSetBkColor($dot,0)

        while _IsPressed("01")
            $pos = GUIGetCursorInfo($hWin)
            ControlMove($hWin,"",$dot,$pos[0],$pos[1],$pos[2],$pos[3])

        WEnd
    EndIf
wend

Have you got any idea about how to do this correctly?

Thanks in advance.

[Melba23]

Renderer,

Take a look at this thread - it might be just what you need.

M23