Lock Window Position

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

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

Global $bLock = False, $tRect_Pos

Global $hWnd = GUICreate("Test", 200, 100)
Global $cButton_LockPos = GUICtrlCreateButton("Lock Window", 50, 35, 100, 30)
GUISetState()

While True
    Switch GUIGetMsg()
        Case $GUI_EVENT_CLOSE
            Exit
        Case $cButton_LockPos
            Switch $bLock
                Case False
                    $tRect_Pos = _WinAPI_GetWindowRect($hWnd)
                    GUIRegisterMsg($WM_MOVING, "_Moving")
                Case True
                    GUIRegisterMsg($WM_MOVING, "")
            EndSwitch
            $bLock = Not $bLock
    EndSwitch
WEnd

Func _Moving($hWnd, $iMsg, $wParam, $lParam)
    Local $tRect_Moving = DllStructCreate($tagRECT, $lParam)
    For $i = 1 To 4
        DllStructSetData($tRect_Moving, $i, DllStructGetData($tRect_Pos, $i))
    Next
EndFunc