https://git.reactos.org/?p=reactos.git;a=commitdiff;h=febf9acfeeb71ae6fca7c3a659449ef7997458fa
commit febf9acfeeb71ae6fca7c3a659449ef7997458fa Author: Giannis Adamopoulos <[email protected]> AuthorDate: Wed Nov 22 17:28:18 2017 +0200 [GDI32] GdiDrawStream: Improve handling of small rcDest sizes - Abort drawing if rcDest has negative height or width. - Ignore sizing margins if rcDest is too small. CORE-13513 --- win32ss/gdi/gdi32/misc/misc.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/win32ss/gdi/gdi32/misc/misc.c b/win32ss/gdi/gdi32/misc/misc.c index 65287d0b1d..6675e7335c 100644 --- a/win32ss/gdi/gdi32/misc/misc.c +++ b/win32ss/gdi/gdi32/misc/misc.c @@ -677,6 +677,19 @@ GdiDrawStream(HDC dc, ULONG l, PGDI_DRAW_STREAM pDS) else sizingtype = ST_STRETCH; + if (pDS->rcDest.right < pDS->rcDest.left || pDS->rcDest.bottom < pDS->rcDest.top) + return 0; + + if (sm.cxLeftWidth + sm.cxRightWidth > pDS->rcDest.right - pDS->rcDest.left) + { + sm.cxLeftWidth = sm.cxRightWidth = 0; + } + + if (sm.cyTopHeight + sm.cyBottomHeight > pDS->rcDest.bottom - pDS->rcDest.top) + { + sm.cyTopHeight = sm.cyBottomHeight = 0; + } + UXTHEME_DrawImageBackground(pDS->hDC, pDS->hImage, &pDS->rcSrc,
