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author | Friedemann Kleint <Friedemann.Kleint@theqtcompany.com> | 2015-12-07 16:33:20 +0100 |
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committer | Friedemann Kleint <Friedemann.Kleint@theqtcompany.com> | 2015-12-12 10:39:14 +0000 |
commit | be9df4bc82b3f62854906761b7661bc2778b513e (patch) | |
tree | 00f0622197f4c77bd22316651883ae3c5083e952 /src/plugins/platforms/windows/qwindowsbackingstore.cpp | |
parent | 69efc425b2cb0ed81a5ec0b6c4c498fdfdefca51 (diff) |
QWindowsBackingStore::flush(): Add warning for UpdateLayeredWindowIndirect() failures.
Task-number: QTBUG-49785
Change-Id: I881e6d294ae6b23e280e727ee1fc48ee6562f2fe
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>
Diffstat (limited to 'src/plugins/platforms/windows/qwindowsbackingstore.cpp')
-rw-r--r-- | src/plugins/platforms/windows/qwindowsbackingstore.cpp | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/plugins/platforms/windows/qwindowsbackingstore.cpp b/src/plugins/platforms/windows/qwindowsbackingstore.cpp index bd5c35037d..135c9eb601 100644 --- a/src/plugins/platforms/windows/qwindowsbackingstore.cpp +++ b/src/plugins/platforms/windows/qwindowsbackingstore.cpp @@ -96,7 +96,12 @@ void QWindowsBackingStore::flush(QWindow *window, const QRegion ®ion, RECT dirty = {dirtyRect.x(), dirtyRect.y(), dirtyRect.x() + dirtyRect.width(), dirtyRect.y() + dirtyRect.height()}; UPDATELAYEREDWINDOWINFO info = {sizeof(info), NULL, &ptDst, &size, m_image->hdc(), &ptSrc, 0, &blend, ULW_ALPHA, &dirty}; - QWindowsContext::user32dll.updateLayeredWindowIndirect(rw->handle(), &info); + const BOOL result = QWindowsContext::user32dll.updateLayeredWindowIndirect(rw->handle(), &info); + if (!result) + qErrnoWarning("UpdateLayeredWindowIndirect failed for ptDst=(%d, %d)," + " size=(%dx%d), dirty=(%dx%d %d, %d)", r.x(), r.y(), + r.width(), r.height(), dirtyRect.width(), dirtyRect.height(), + dirtyRect.x(), dirtyRect.y()); } else { QWindowsContext::user32dll.updateLayeredWindow(rw->handle(), NULL, &ptDst, &size, m_image->hdc(), &ptSrc, 0, &blend, ULW_ALPHA); } |