What does QWidget.addAction() do actually?

Hi, I don't really understand what QWidget.addAction() does even after reading the documentation, I do the following:

connect(action_Close, SIGNAL(triggered()), this, SLOT(close()) );
buttonClose->addAction(action_Close);

I figure that the above code would cause clicking buttonClose to call close() and close the window. But nothing happen, what am I doing wrong?

The compiler output doesn't show any error about assigning the signal and slot. And close() is a SLOT in QWidget.

That's the wrong approach, you either use the QPushButtons clicked signal or use a action which can be triggered. addAction() adds an action to a widget and it is shown when the context menu of this widget is requested.

Quote:

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Originally Posted by Lykurg

That's the wrong approach, you either use the QPushButtons clicked signal or use a action which can be triggered. addAction() adds an action to a widget and it is shown when the context menu of this widget is requested.

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Thanks, but what do you mean by "action which can be triggered"? Aren't all QAction can be triggered?

Quote:

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Originally Posted by jezz

Thanks, but what do you mean by "action which can be triggered"?

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Yeah, it is missunderstandable. I meant, that if you use addAction on the widget you can't trigger the added action directly. Other example: Add an action to a QToolButton, then you can trigger that action directly by clicking the button.

addAction() only associates a given action with a given widget, nothing more. Some widgets (like QToolBar) detect such associations and perform additional things then (i.e. QToolBar creates a tool button, initializes it with the action and adds it to its own layout).