GUIHole Example

#include <GUIConstants.au3>
#include <GDIPlus.au3>

; -Author: name22 (www.autoit.de)

$hWnd = GUICreate("Example by name22", 400, 400)
$cDummy_Start = GUICtrlCreateDummy()
$cButton1 = GUICtrlCreateButton("Button 1", 50, 50, 100, 50)
$cButton2 = GUICtrlCreateButton("Button 2", 70, 200, 100, 50)
$cDummy_End = GUICtrlCreateDummy()
GUISetState()

_GDIPlus_Startup()

$hGraphics = _GDIPlus_GraphicsCreateFromHWND($hWnd)
_GDIPlus_GraphicsSetSmoothingMode($hGraphics, 2)

For $i = $cDummy_Start + 1 To $cDummy_End - 1
    $aPos = ControlGetPos($hWnd, "", $i)
    ConsoleWrite($aPos[0] & @CRLF)
    _GDIPlus_GraphicsSetClipRect($hGraphics, $aPos[0], $aPos[1], $aPos[2], $aPos[3], 3)
Next

_GDIPlus_GraphicsFillEllipse($hGraphics, 20, 20, 300, 300)

While True
    Switch GUIGetMsg()
        Case $GUI_EVENT_CLOSE
            Exit
        Case $cButton1
            MsgBox(64, "Click", "Button 1")
        Case $cButton2
            MsgBox(64, "Click", "Button 2")
    EndSwitch
WEnd


; #FUNCTION# ====================================================================================================================
; Name...........: _GDIPlus_GraphicsSetClipRect
; Description ...: Updates the clipping region of a Graphics object to a region that is the combination of itself and a rectangle
; Syntax.........: _GDIPlus_GraphicsSetClipRect($hGraphics, $nX, $nY, $nWidth, $nHeight[, $iCombineMode = 0])
; Parameters ....: $hGraphics - Pointer to a Graphics object
;                  $nX        - X coordinate of the upper-left corner of the rectangle
;                  $nY        - Y coordinate of the upper-left corner of the rectangle
;                  $nWidth    - Width of the rectangle
;                  $nHeight   - Height of the rectangle
;                  $iCombineMode - Regions combination mode:
;                  |0 - The existing region is replaced by the new region
;                  |1 - The existing region is replaced by the intersection of itself and the new region
;                  |2 - The existing region is replaced by the union of itself and the new region
;                  |3 - The existing region is replaced by the result of performing an XOR on the two regions
;                  |4 - The existing region is replaced by the portion of itself that is outside of the new region
;                  |5 - The existing region is replaced by the portion of the new region that is outside of the existing region
; Return values .: Success      - True
;                  Failure      - False and either:
;                  |@error and @extended are set if DllCall failed
;                  |$GDIP_STATUS contains a non zero value specifying the error code
; Remarks .......: None
; Related .......: None
; Link ..........; @@MsdnLink@@ GdipSetClipRect
; Example .......; No
; ===============================================================================================================================
Func _GDIPlus_GraphicsSetClipRect($hGraphics, $nX, $nY, $nWidth, $nHeight, $iCombineMode = 0)
    Local $aResult = DllCall($ghGDIPDll, "uint", "GdipSetClipRect", "hwnd", $hGraphics, "float", $nX, "float", $nY, "float", $nWidth, "float", $nHeight, "int", $iCombineMode)

    If @error Then Return SetError(@error, @extended, False)
    $GDIP_STATUS = $aResult[0]
    Return $aResult[0] = 0
EndFunc   ;==>_GDIPlus_GraphicsSetClipRect