Example of Intercepting WM_MOVING to restrict area the window can be moved to ;Autoit v3.3.14.5 Limit Form Move Example-- Bilgus 2018 #include <GUIConstantsEx.au3> #include <WindowsConstants.au3> #include <WinAPISysWin.au3> ;_WinAPI_DefWindowProc() Global $g_hGUI, $g_idLimit Global $g_aWindowLimits = [15, 10, @DesktopWidth / 2, @DesktopHeight / 2] ; Min X, Min Y, Max X, Max Y GUIRegisterMsg($WM_MOVING, WM_MOVING) ;Registe