Hello, The line what is produccing the regression is: void X11DRV_SetWindowStyle( HWND hwnd, LONG oldStyle ) { Display *display = thread_display(); WND *wndPtr; LONG changed; if (hwnd == GetDesktopWindow()) return; if (!(wndPtr = WIN_GetPtr( hwnd ))) return; if (wndPtr == WND_OTHER_PROCESS) return; changed = wndPtr->dwStyle ^ oldStyle; if (changed & WS_VISIBLE) { if (!IsRectEmpty( &wndPtr->rectWindow ) && !is_window_top_level(wndPtr)) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Before of the regression it was: if (!IsRectEmpty( &wndPtr->rectWindow )) Regards, Carlos. -- ___ _ \ | / Consulting | . |._ _ _| | ___ ___ ___ http://www.andago.com | || ' |/ . |<_> |/ . |/ . \__ GNU/Linux |_|_||_|_|\___|<___|\_. |\___/ _ \ __|\ \ / Carlos A. Lozano <___'/ | \ -_) __/\__ \ > < -_) [ carlos.lozano(a)andago.com ]\___|_| ____/ _/\_\___| [ calb(a)epsxe.com ] http://www.ePSXe.com