Add more info about qApp pointer

[hakonhagland]

Add more info in the documentation about how to get the qApp pointer when using the qtbot fixture, see issue #504 for more information.

[hakonhagland]

Add more info in the documentation about how to get the qApp pointer

@nicoddemus Sorry, I did not check the sphinx output. I think there is something wrong with the backticks:

I will try to fix it.

[hakonhagland]

The QApplication object is accessible through the QApplication.instance() method

I also discovered that you can use the qapp_cls fixture

https://github.com/pytest-dev/pytest-qt/blob/f1a6ac554c1d2a81392ed526c56c49265b6a02ea/src/pytestqt/plugin.py#L32

to get the object. Maybe we should also mention this alternative in the documentation?

[The-Compiler]

qapp_cls gives you the class (it's intended to be overridden by your own code to customize what to use). qapp will give you the QApplication instance.

[hakonhagland]

qapp will give you the QApplication instance.

@The-Compiler Thanks for the information! I have updated PR #506 such that the docs mentions this qapp fixture instead of QApplication.instance()

[nicoddemus]

@nicoddemus Sorry, I did not check the sphinx output. I think there is something wrong with the backticks:

No worries, I missed that as well. Thanks for the follow up!