ok, I can get rid of the title bar, but I'm having trouble refreshing the window afterwards.
AppTitle "HideCaption" Graphics 640,480,0,2 Const GWL_STYLE = -16 Const WS_CAPTION = 12582912;$C00000 Global hwndHandle% = api_FindWindow("Blitz Runtime Class", "HideCaption") Global Style% = api_GetWindowLong(hwndHandle, GWL_STYLE) ;If (style And WS_CAPTION) <> WS_CAPTION Then style = (style - WS_CAPTION) api_SetWindowLong(hwndHandle%, GWL_STYLE, Style) api_InvalidateRect(hwndHandle%, 0, 1); While Not KeyDown(1) Wend End