Here you go. If you like it, use it. #include <GUIConstantsEx.au3> #include <WindowsConstants.au3> #include <StaticConstants.au3> #include <ComboConstants.au3> __steam_window('STEAM - username', 1000, 600) ; WIDTH NOT SMALLER THEN 400 | HEIGHT NOT SMALLER THEN 200 === TRUST ME Func __steam_window($sWINDOW_TITLE, $iWINDOW_WIDTH, $iWINDOW_HEIGHT) Local $oWINDOW = GUICreate($sWINDOW_TITLE, $iWINDOW_WIDTH, $iWINDOW_HEIGHT, -1, -1, BitOR($WS_POPUP, $WS_SYSMENU, $WS_MI