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Diffstat (limited to 'src/gui/painting/qbackingstore.cpp')
| -rw-r--r-- | src/gui/painting/qbackingstore.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/gui/painting/qbackingstore.cpp b/src/gui/painting/qbackingstore.cpp index edb5f66c5b..c1f7c6c738 100644 --- a/src/gui/painting/qbackingstore.cpp +++ b/src/gui/painting/qbackingstore.cpp @@ -97,6 +97,11 @@ void QBackingStore::flush(const QRegion ®ion, QWindow *win, const QPoint &off { if (!win) win = window(); + if (!win->handle()) { + qWarning() << "QBackingStore::flush() called for " + << win << " which does not have a handle."; + return; + } #ifdef QBACKINGSTORE_DEBUG if (win && win->isTopLevel() && !qt_window_private(win)->receivedExpose) { |