Details
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Bug
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Resolution: Done
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P1: Critical
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5.10.0, 5.10.1
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Windows
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9137691e745039f8ad9cdee2594a958e244ba341 (qt/qtbase/5.11.3)
Description
A Qt 5.10 application running on a display with a resolution set to 125%, 150% or 175% and where PROCESS_DPI_UNAWARE is set is crashing when the QSystemTrayIcon's contextual menu is displayed.
Attached is a small test project that reproduces the crash. It:
- calls SetProcessDpiAwareness(PROCESS_DPI_UNAWARE); in main.cpp
- set up the contextual menu for QSystemTrayIcon in MainWindow.cpp
See attached video that exhibits the crash: screencast.mov
Reproducibility:
- This issue is reproducible with Qt 5.10.0 and Qt 5.10.1.
- It does not occur with Qt 5.9.3.
- Reproducible on Windows 10 with multiple machines
Steps to reproduce:
- Set your screen resolution to 125%, 150% or 175%. It does not matter if the screen is a full HD or 4K.
- Download the attached sample project QSystemTray ( QSystemTray.zip )
- Compile and run the application
- Close the window of the application
- Right click on the tray icon to display the contextual menu
Result: The application crashes. You see in the console:
Exception thrown: read access violation. **this** was 0x8.
The backtrace is:
Qt5Guid.dll!QScopedPointer<QObjectData,QScopedPointerDeleter<QObjectData> >::data() Line 140 C++ Qt5Guid.dll!qGetPtrHelper<QScopedPointer<QObjectData,QScopedPointerDeleter<QObjectData> > >(const QScopedPointer<QObjectData,QScopedPointerDeleter<QObjectData> > & p) Line 1013 C++ Qt5Guid.dll!QScreen::d_func() Line 69 C++ Qt5Guid.dll!QScreen::geometry() Line 377 C++ Qt5Guid.dll!QHighDpiScaling::origin(const QScreen * screen) Line 441 C++ Qt5Widgetsd.dll!QHighDpi::fromNativePixels(const QPoint & pixelPoint, const QScreen * screen) Line 314 C++ Qt5Widgetsd.dll!QSystemTrayIcon::setContextMenu::__l10::<lambda>(QPoint globalNativePos, const QPlatformScreen * platformScreen) Line 218 C++ Qt5Widgetsd.dll!QtPrivate::FunctorCall<QtPrivate::IndexesList<0,1>,QtPrivate::List<QPoint,QPlatformScreen const * __ptr64>,void,void <lambda>(QPoint, const QPlatformScreen *) >::call(QSystemTrayIcon::setContextMenu::__l10::void <lambda>(QPoint, const QPlatformScreen *) & f, void * * arg) Line 130 C++ Qt5Widgetsd.dll!QtPrivate::Functor<void <lambda>(QPoint, const QPlatformScreen *),2>::call<QtPrivate::List<QPoint,QPlatformScreen const * __ptr64>,void>(QSystemTrayIcon::setContextMenu::__l10::void <lambda>(QPoint, const QPlatformScreen *) & f, void * __formal, void * * arg) Line 241 C++ Qt5Widgetsd.dll!QtPrivate::QFunctorSlotObject<void <lambda>(QPoint, const QPlatformScreen *),2,QtPrivate::List<QPoint,QPlatformScreen const * __ptr64>,void>::impl(int which, QtPrivate::QSlotObjectBase * this_, QObject * r, void * * a, bool * ret) Line 429 C++ Qt5Cored.dll!QtPrivate::QSlotObjectBase::call(QObject * r, void * * a) Line 378 C++ Qt5Cored.dll!QMetaObject::activate(QObject * sender, int signalOffset, int local_signal_index, void * * argv) Line 3754 C++ Qt5Cored.dll!QMetaObject::activate(QObject * sender, const QMetaObject * m, int local_signal_index, void * * argv) Line 3629 C++ Qt5Guid.dll!QPlatformSystemTrayIcon::contextMenuRequested(QPoint _t1, const QPlatformScreen * _t2) Line 194 C++ qwindowsd.dll!QWindowsSystemTrayIcon::winEvent(const tagMSG & message, long * result) Line 388 C++ qwindowsd.dll!qWindowsTrayIconWndProc(HWND__ * hwnd, unsigned int message, unsigned __int64 wParam, __int64 lParam) Line 143 C++ [External Code] Qt5Cored.dll!QEventDispatcherWin32::processEvents(QFlags<enum QEventLoop::ProcessEventsFlag> flags) Line 563 C++ qwindowsd.dll!QWindowsGuiEventDispatcher::processEvents(QFlags<enum QEventLoop::ProcessEventsFlag> flags) Line 74 C++ Qt5Cored.dll!QEventLoop::processEvents(QFlags<enum QEventLoop::ProcessEventsFlag> flags) Line 135 C++ Qt5Cored.dll!QEventLoop::exec(QFlags<enum QEventLoop::ProcessEventsFlag> flags) Line 212 C++ Qt5Cored.dll!QCoreApplication::exec() Line 1332 C++ Qt5Guid.dll!QGuiApplication::exec() Line 1688 C++ Qt5Widgetsd.dll!QApplication::exec() Line 2918 C++ QSystemTray.exe!main(int argc, char * * argv) Line 18 C++ QSystemTray.exe!WinMain(HINSTANCE__ * __formal, HINSTANCE__ * __formal, char * __formal, int __formal) Line 104 C++ [External Code]
