Details
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Bug
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Resolution: Incomplete
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Not Evaluated
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None
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5.13.0
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None
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All
Description
When XDG_CURRENT_DESKTOP=kde, the QMenu works fine. However if XDG_CURRENT_DESKTOP=gnome, then pressing and immediately releasing Alt results in focus getting stuck in menu.
But here's the twist: actually, the problem is present for any value of this variable, even XDG_CURRENT_DESKTOP=foo. So this problem affects all existing platforms where the value is not set to kde, this is pretty bad.
Steps to reproduce:
1. Compile and build testcase (in terms of terminal commands):
$ cat mainwindow.h #ifndef MAINWINDOW_H #define MAINWINDOW_H #include <QMainWindow> QT_BEGIN_NAMESPACE class QAction; class QMenu; QT_END_NAMESPACE class MainWindow : public QMainWindow { Q_OBJECT public: MainWindow(); private: QMenu *fileMenu; QAction *exitAct; }; #endif $ cat main.cpp #include <QApplication> #include <QtWidgets> #include "mainwindow.h" MainWindow::MainWindow() { exitAct = new QAction(tr("&Exit"), this); exitAct->setShortcuts(QKeySequence::Quit); exitAct->setStatusTip(tr("Exit the application")); connect(exitAct, &QAction::triggered, this, &QWidget::close); fileMenu = menuBar()->addMenu(tr("&File")); fileMenu->addSeparator(); fileMenu->addAction(exitAct); setMinimumSize(160, 160); } int main(int argc, char *argv[]) { QApplication app(argc, argv); MainWindow window; window.show(); return app.exec(); } $ cat menus.pro QT += widgets HEADERS = mainwindow.h SOURCES = main.cpp CONFIG+=debug $ qmake menus.pro $ make g++ -c -pipe -g -Wall -W -D_REENTRANT -fPIC -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB -I. -isystem /usr/include/qt -isystem /usr/include/qt/QtWidgets -isystem /usr/include/qt/QtGui -isystem /usr/include/qt/QtCore -I. -isystem /usr/include/libdrm -I/usr/lib/qt/mkspecs/linux-g++ -o main.o main.cpp g++ -pipe -g -Wall -W -dM -E -o moc_predefs.h /usr/lib/qt/mkspecs/features/data/dummy.cpp /usr/bin/moc -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB --include /home/constantine/Projects/qt-menu-example/moc_predefs.h -I/usr/lib/qt/mkspecs/linux-g++ -I/home/constantine/Projects/qt-menu-example -I/usr/include/qt -I/usr/include/qt/QtWidgets -I/usr/include/qt/QtGui -I/usr/include/qt/QtCore -I/usr/include/c++/9.1.0 -I/usr/include/c++/9.1.0/x86_64-pc-linux-gnu -I/usr/include/c++/9.1.0/backward -I/usr/lib/gcc/x86_64-pc-linux-gnu/9.1.0/include -I/usr/local/include -I/usr/lib/gcc/x86_64-pc-linux-gnu/9.1.0/include-fixed -I/usr/include mainwindow.h -o moc_mainwindow.cpp g++ -c -pipe -g -Wall -W -D_REENTRANT -fPIC -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB -I. -isystem /usr/include/qt -isystem /usr/include/qt/QtWidgets -isystem /usr/include/qt/QtGui -isystem /usr/include/qt/QtCore -I. -isystem /usr/include/libdrm -I/usr/lib/qt/mkspecs/linux-g++ -o moc_mainwindow.o moc_mainwindow.cpp g++ -o menus main.o moc_mainwindow.o /usr/lib/libQt5Widgets.so /usr/lib/libQt5Gui.so /usr/lib/libQt5Core.so /usr/lib/libGL.so -lpthread $ XDG_CURRENT_DESKTOP=foo ./menus
2. After application appeared, press Alt key, and immediately release.
3. Press Enter
Expected
Nothing
Actual
"File" menu gets opened.
Additional infomation
I remember using the workaround with "kde" for a very long time, so at least with qt5 the problem has been possibly always.
Qt4 doesn't have the problem though.