QtMenubar Call Slot - c++

Question

This is inside a Menu class. The problem is addAction. This works, but there is no connection to slot:
QMenu* menu2 = new QMenu("Test");
menu2->addAction("Test");
When I do this:
QMenu* menu2 = new QMenu("Test");
menu2->addAction("Test", Menu, test);
I get compiler error: "error: expected primary-expression before ',' token"
I mean to call the test() function in the Menu class. What am I doing wrong?

Answer 1

Well, the error comes from passing Menu as an argument. You say Menu is a class, and classes are not expressions on themselves.
If you need to call test on an instance of Menu, where Menu is not a derivate from QObject (ie. no slots available), then you can just create a slot in the widget that contains the QMenu itself (probably a QMainWindow), and implement the call in there!
Edit: to add an example.
class MainWindow : public QMainWindow {
Q_OBJECT
// Usual declarations...
private slots:
void myCustomSlot();
};
Now, say that you're populating the main window inside its constructor:
MainWindow::MainWindow(...) {
// Some initialization code
QMenu *menu2 = new QMenu("Test");
menu2->addAction("Test", this, SLOT(myCustomSlot));
// Some more initialization code
}
// ...
void MainWindow::myCustomSlot() {
instanceOfMenu->test();
}
Of course, if you're creating the menu outside that class, you'd need to make the slot public, but that's another issue