Larry deleted all his posts some day. Here is full original example (working fine with older AutoIt version 3.2.2.0): #include <GUIConstants.au3> $hwnd = GUICreate("Text Region",400,50,-1,-1,$WS_POPUP,BitOR($WS_EX_TOPMOST,$WS_EX_TOOLWINDOW)) GUISetBkColor(0x00FF00) $rgn = CreateTextRgn($hwnd,"Larry Rocks!",50,"Arial",1000) SetWindowRgn($hwnd,$rgn) GUISetState() Sleep(3000) $rgn = CreateTextRgn($hwnd,"Really Really",50,"Arial",1000) SetWindowRgn($hwnd,$rgn) Sleep(3000) Func Set