diff --git a/hw/xwin/winmultiwindowwndproc.c b/hw/xwin/winmultiwindowwndproc.c index bd9edcb4d..313822972 100644 --- a/hw/xwin/winmultiwindowwndproc.c +++ b/hw/xwin/winmultiwindowwndproc.c @@ -453,6 +453,14 @@ winTopLevelWindowProc (HWND hwnd, UINT message, HandleCustomWM_INITMENU ((unsigned long)hwnd, wParam); break; + case WM_ERASEBKGND: + /* + * Pretend that we did erase the background but we don't care, + * since we repaint the entire region anyhow + * This avoids some flickering when resizing. + */ + return TRUE; + case WM_PAINT: /* Only paint if our window handle is valid */ if (hwndScreen == NULL) diff --git a/hw/xwin/winwin32rootlesswndproc.c b/hw/xwin/winwin32rootlesswndproc.c index e624ded36..4d7afee42 100755 --- a/hw/xwin/winwin32rootlesswndproc.c +++ b/hw/xwin/winwin32rootlesswndproc.c @@ -783,6 +783,17 @@ winMWExtWMWindowProc (HWND hwnd, UINT message, SendMessage (hwndScreen, message, wParam, lParam); return 0; + case WM_ERASEBKGND: +#if CYGDEBUG + winDebug ("winMWExtWMWindowProc - WM_ERASEBKGND\n"); +#endif + /* + * Pretend that we did erase the background but we don't care, + * since we repaint the entire region anyhow + * This avoids some flickering when resizing. + */ + return TRUE; + case WM_PAINT: /* BeginPaint gives us an hdc that clips to the invalidated region */