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-rw-r--r--src/plugins/platforms/ios/quiview.mm12
1 files changed, 10 insertions, 2 deletions
diff --git a/src/plugins/platforms/ios/quiview.mm b/src/plugins/platforms/ios/quiview.mm
index eac492044c..32f27587c6 100644
--- a/src/plugins/platforms/ios/quiview.mm
+++ b/src/plugins/platforms/ios/quiview.mm
@@ -430,7 +430,10 @@ Q_LOGGING_CATEGORY(lcQpaTablet, "qt.qpa.input.tablet")
QWindowSystemInterface::handleTouchEvent<QWindowSystemInterface::AsynchronousDelivery>(
self.platformWindow->window(), timeStamp, iosIntegration->touchDevice(), m_activeTouches.values());
} else {
- QWindowSystemInterface::handleTouchEvent<QWindowSystemInterface::SynchronousDelivery>(
+ // Send the touch event asynchronously, as the application might spin a recursive
+ // event loop in response to the touch event (a dialog e.g.), which will deadlock
+ // the UIKit event delivery system (QTBUG-98651).
+ QWindowSystemInterface::handleTouchEvent<QWindowSystemInterface::AsynchronousDelivery>(
self.platformWindow->window(), timeStamp, iosIntegration->touchDevice(), m_activeTouches.values());
}
}
@@ -536,7 +539,12 @@ Q_LOGGING_CATEGORY(lcQpaTablet, "qt.qpa.input.tablet")
NSTimeInterval timestamp = event ? event.timestamp : [[NSProcessInfo processInfo] systemUptime];
QIOSIntegration *iosIntegration = static_cast<QIOSIntegration *>(QGuiApplicationPrivate::platformIntegration());
- QWindowSystemInterface::handleTouchCancelEvent(self.platformWindow->window(), ulong(timestamp * 1000), iosIntegration->touchDevice());
+
+ // Send the touch event asynchronously, as the application might spin a recursive
+ // event loop in response to the touch event (a dialog e.g.), which will deadlock
+ // the UIKit event delivery system (QTBUG-98651).
+ QWindowSystemInterface::handleTouchCancelEvent<QWindowSystemInterface::AsynchronousDelivery>(
+ self.platformWindow->window(), ulong(timestamp * 1000), iosIntegration->touchDevice());
}
- (int)mapPressTypeToKey:(UIPress*)press withModifiers:(Qt::KeyboardModifiers)qtModifiers text:(QString &)text