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In RDW_ValidateParent, get rid of the parent update region if it is

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empty after the validation, to avoid a useless WM_PAINT.
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Alexandre Julliard 2003-12-05 04:42:43 +00:00
parent 46f11eda58
commit 09791702e0
1 changed files with 9 additions and 1 deletions
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10
windows/painting.c
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@ -379,7 +379,15 @@ static void RDW_ValidateParent(WND *wndChild)
ptOffset.x = rect.left - rectParent.left; ptOffset.x = rect.left - rectParent.left;
ptOffset.y = rect.top - rectParent.top; ptOffset.y = rect.top - rectParent.top;
OffsetRgn( hrg, ptOffset.x, ptOffset.y ); OffsetRgn( hrg, ptOffset.x, ptOffset.y );
CombineRgn( wndParent->hrgnUpdate, wndParent->hrgnUpdate, hrg, RGN_DIFF ); if (CombineRgn( wndParent->hrgnUpdate, wndParent->hrgnUpdate, hrg, RGN_DIFF ) == NULLREGION)
{
/* the update region has become empty */
DeleteObject( wndParent->hrgnUpdate );
wndParent->hrgnUpdate = 0;
wndParent->flags &= ~WIN_NEEDS_ERASEBKGND;
if( !(wndParent->flags & WIN_INTERNAL_PAINT) )
add_paint_count( wndParent->hwndSelf, -1 );
}
OffsetRgn( hrg, -ptOffset.x, -ptOffset.y ); OffsetRgn( hrg, -ptOffset.x, -ptOffset.y );
} }
} }