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Diffstat (limited to 'src/gui/painting/qbackingstore.cpp')
| -rw-r--r-- | src/gui/painting/qbackingstore.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/gui/painting/qbackingstore.cpp b/src/gui/painting/qbackingstore.cpp index 03c2fc8d6a..63f7ba594f 100644 --- a/src/gui/painting/qbackingstore.cpp +++ b/src/gui/painting/qbackingstore.cpp @@ -82,6 +82,10 @@ void QBackingStore::flush(const QRegion ®ion, QWindow *win, const QPoint &off { if (!win) win = window(); + + if (win && !qt_window_private(win)->receivedExpose) + qWarning("QBackingStore::flush() called with non-exposed window, behavior is undefined"); + d_ptr->platformBackingStore->flush(win, region, offset); } |