Register WM_MOVE - Get Window Coordinates

#include <GUIConstants.au3>
#include <WinAPI.au3>
#include <WindowsConstants.au3>

$hWnd = GUICreate("Move Test", 200, 100)
$cLabel_X = GUICtrlCreateLabel("", 10, 10, 90, 20)
$cLabel_Y = GUICtrlCreateLabel("", 100, 10, 90, 20)
GUISetState()

GUIRegisterMsg($WM_MOVE, "_WM_MOVE")

While GUIGetMsg() <> -3
WEnd

Func _WM_MOVE($hWnd, $Msg, $wParam, $lParam)
    Local $iX = _WinAPI_LoWord($lParam)
    Local $iY = _WinAPI_HiWord($lParam)
    GUICtrlSetData($cLabel_X, $iX)
    GUICtrlSetData($cLabel_Y, $iY)
EndFunc