How to get notification in your application when a docking widget is closed?

[mrawd]

I am trying to add this great tool into our pyside6 application and I have made a lot of progress so far. What I am missing is a notification for when a docking window is closed, so I could do a proper cleanup of the widget that was part of it. There are some signals there, but none that would help me when user clicks on X of the tab and closes it. The closest two I was able to find were dockWidgetRemoved and dockWidgetRemoved signals, but they don't seem to be emitted when X is clicked - documentation is saying it will be emitted only when removeDockWidget() is called.

Since I asked this originally, I have set DockWidgetDeleteOnClose feature to True for the DockWidget object and now I am able to get both dockWidgetAboutToBeRemoved and dockWidgetRemoved signals.

Is this the best way to track down which widget is being closed or there is a better way?

[char101]

Closing a dock widget does not delete it, it just make it invisible.

You can always connect the closed signal of the dock widget and then remove the dock widget (using dock.deleteDockWidget()) and its underlying widget (dock.widget().deleteLater()) in the signal handler.

If you just started using this library I suggest running doxygen on it, will make it easier to navigate the API.

You can also use my precompiled doxygen output: qtads.zip

[mrawd]

If I don't set DockWidgetDeleteOnClose, then I do get the closed signal back when X is pressed. But, how would I know which of these dock widget actually got clicked on, so I could call deleteDockWidget() on?

The only way I can think of is to go through all of the dock windows inside the dock manager and check for its state, which is not a great way to go about this. If that closed signal would have a pointer to its dock widget, things would be much easier...

Well, there is another way...I could create my own version of CDockWidget and catch closed signal there and emit it with a new signal my new class would have that would tell me which dock widget was closed. Was this intended to be used this way?

[char101]

def closeHandler(self):
    dock = self.sender()
    ...

https://doc.qt.io/qt-6/qobject.html#sender

[mrawd]

Thank you! I forgot about that way to get information about who is sending those signals!