[Maya-Python] MayaQWidgetDockableMixin dockCloseEventTriggered not called

[kiteh]

Hi all,

I am having some issues with MayaQWidgetDockableMixin, in which it is a
QWidget.
When I am testing it out in Maya 2017, I used the signal
`dockCloseEventTriggered` where a function will be called to save the
relevant options I have made within my GUI by using QSettings. The
settings are able to populate correctly when I am relaunching my tool.

However when I am testing this out in Maya 2018, it seems that the
function/ `*dockCloseEventTriggered*` is not being called. As such, nothing
is saved/ loaded, and the .conf file is also not created.

Pardon me for not posting any codes as it consists of quite several scripts
but wondering if anyone has encounter this/ if there is a way to check if
the signal or trigger does indeed works?

[kiteh]

I managed to have find a resolution.
Instead of using `dockCloseEventTriggered`, using of `closeEvent` seems to
have resolve it.

I have to write my UI create code to include something as follows:
self.ui.closeEvent = self.closeEvent

And this seems to be picking up in both Maya 2017 and 2018. Or as one of my
co-worker is telling me that the `MayaQWidgetDockableMixin` I am using
could be a custom build since my company may have rewritten certain
portions to conform it to other tools.

[kiteh]

Actually I was wrong - I had thought that using `self.closeEvent` may works
in Maya 2018, but turns out it is not.

Need any insights on this. Much appreciated in advance!