Ch 3: self.destroy in CategoryWindow hangs app, self.close works

[cortical-iv]

With the following line the new category widget causes my app to hang when I press cancel:

        self.cancel_btn = qtw.QPushButton('Cancel',
                                          clicked=self.destroy)

This is from calendar_app.py:
https://github.com/PacktPublishing/Mastering-GUI-Programming-with-Python/blob/master/Chapter03/calendar_app.py#L30

When I change destroy to close it works fine. I also just noticed in the book it has close (p 76), so probably just a version glitch. :)

[cortical-iv]

Note this is also an issue in the text_editor for Chapter 4 for the quit_action:
https://github.com/PacktPublishing/Mastering-GUI-Programming-with-Python/blob/master/Chapter04/text_editor.py#L97

[alandmoore]

Thanks for reporting this!