diff options
Diffstat (limited to 'src/widgets/kernel/qwidgetbackingstore.cpp')
| -rw-r--r-- | src/widgets/kernel/qwidgetbackingstore.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/widgets/kernel/qwidgetbackingstore.cpp b/src/widgets/kernel/qwidgetbackingstore.cpp index b40c2d12ad..a32eb2a03b 100644 --- a/src/widgets/kernel/qwidgetbackingstore.cpp +++ b/src/widgets/kernel/qwidgetbackingstore.cpp @@ -101,6 +101,13 @@ void QWidgetBackingStore::qt_flush(QWidget *widget, const QRegion ®ion, QBack if (tlw->testAttribute(Qt::WA_DontShowOnScreen) || widget->testAttribute(Qt::WA_DontShowOnScreen)) return; + + // Foreign Windows do not have backing store content and must not be flushed + if (QWindow *widgetWindow = widget->windowHandle()) { + if (widgetWindow->type() == Qt::ForeignWindow) + return; + } + static bool fpsDebug = qEnvironmentVariableIntValue("QT_DEBUG_FPS"); if (fpsDebug) { if (!widgetBackingStore->perfFrames++) |