ContextMenu not working when using Qt::ActionsContextMenu and static memory allocation

[partyBoy]

Hello,

I hope someone could explain me this behaviour, when using setContextMenuPolicy(Qt::ActionsContextMenu).
I can see my QActions in the contextMenu but only when I create them using dynamic memory allocation, like the 3 first. If i use static memory allocation (like the last one) the QAction is not showed in the contextMenu.

MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    QAction *searchTodayAction = new QAction("Today's Flight", this);
    QAction *searchYesterdayAction = new QAction("Yesterday's Flight", this);
    QAction *randomAction = new QAction("Random Flight", this);
    QAction notWorkingAction("Stuck Flight", this);

    this->addAction(searchTodayAction);
    this->addAction(searchYesterdayAction);
    this->addAction(randomAction);
    this->addAction(&notWorkingAction);
    this->setContextMenuPolicy(Qt::ActionsContextMenu);
}

Thanks !

[SGaist]

Hi and welcome to devnet,

Because notWorkingAction is a variable local to the constructor, so it will be destroyed at the end of it.

[mrjj]

Hi
Its not a static allocation, its stack allocation and its
deleted when scope ends. in this case the constructor.