winex11.drv: When copying window bits exclude an update region only if the parent doesn't clip its children.
dmitry at codeweavers.com
Fri Jan 28 22:34:07 CST 2011
Alexandre Julliard <julliard at winehq.org> wrote:
> > - ExcludeUpdateRgn( hdc_dst, data->hwnd );
> > + if (!parent || !(GetWindowLongW( parent, GWL_STYLE ) & WS_CLIPCHILDREN))
> > + ExcludeUpdateRgn( hdc_dst, data->hwnd );
> I don't see what the parent clipping has to do with this. Could you
> please explain?
Additional testing shows that this change is not correct, I'll try to figure
out a better one.
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