diff options
| -rw-r--r-- | src/plugins/platforms/cocoa/qcocoawindow.h | 6 | ||||
| -rw-r--r-- | src/plugins/platforms/cocoa/qcocoawindow.mm | 6 |
2 files changed, 10 insertions, 2 deletions
diff --git a/src/plugins/platforms/cocoa/qcocoawindow.h b/src/plugins/platforms/cocoa/qcocoawindow.h index 4d2af84e8e..4d5f5d74f2 100644 --- a/src/plugins/platforms/cocoa/qcocoawindow.h +++ b/src/plugins/platforms/cocoa/qcocoawindow.h @@ -72,6 +72,7 @@ typedef NSWindow<QNSWindowProtocol> QCocoaNSWindow; QCocoaWindow *_platformWindow; BOOL _grabbingMouse; BOOL _releaseOnMouseUp; + QPointer<QObject> _watcher; } @property (nonatomic, readonly) QCocoaNSWindow *window; @@ -321,6 +322,11 @@ public: // for QNSView }; QHash<quintptr, BorderRange> m_contentBorderAreas; // identifer -> uppper/lower QHash<quintptr, bool> m_enabledContentBorderAreas; // identifer -> enabled state (true/false) + + // This object is tracked by a 'watcher' + // object in a window helper, preventing use of dangling + // pointers. + QObject sentinel; }; QT_END_NAMESPACE diff --git a/src/plugins/platforms/cocoa/qcocoawindow.mm b/src/plugins/platforms/cocoa/qcocoawindow.mm index eb65f7e061..9572b5ac4c 100644 --- a/src/plugins/platforms/cocoa/qcocoawindow.mm +++ b/src/plugins/platforms/cocoa/qcocoawindow.mm @@ -99,6 +99,7 @@ static bool isMouseEvent(NSEvent *ev) // make sure that m_nsWindow stays valid until the // QCocoaWindow is deleted by Qt. [_window setReleasedWhenClosed:NO]; + _watcher = &_platformWindow->sentinel; } return self; @@ -107,7 +108,7 @@ static bool isMouseEvent(NSEvent *ev) - (void)handleWindowEvent:(NSEvent *)theEvent { QCocoaWindow *pw = self.platformWindow; - if (pw && pw->m_forwardWindow) { + if (_watcher && pw && pw->m_forwardWindow) { if (theEvent.type == NSLeftMouseUp || theEvent.type == NSLeftMouseDragged) { QNSView *forwardView = pw->m_qtView; if (theEvent.type == NSLeftMouseUp) { @@ -146,7 +147,7 @@ static bool isMouseEvent(NSEvent *ev) if (!self.window.delegate) return; // Already detached, pending NSAppKitDefined event - if (pw && pw->frameStrutEventsEnabled() && isMouseEvent(theEvent)) { + if (_watcher && pw && pw->frameStrutEventsEnabled() && isMouseEvent(theEvent)) { NSPoint loc = [theEvent locationInWindow]; NSRect windowFrame = [self.window convertRectFromScreen:[self.window frame]]; NSRect contentFrame = [[self.window contentView] frame]; @@ -162,6 +163,7 @@ static bool isMouseEvent(NSEvent *ev) - (void)detachFromPlatformWindow { _platformWindow = 0; + _watcher.clear(); [self.window.delegate release]; self.window.delegate = nil; } |