Certain widgets not shown in menu

[Tommy Brunn]

I'm using Pygtk to create an application indicator. In my case, I wanted to put widgets that aren't subclasses of gtk.MenuItem in the menu, which can be achieved by appending a MenuItem to the menu and then adding the other widget as a child of the MenuItem. This works fine for things like labels, and if you're not using the an appindicator, you can put pretty much any widget inside of the menu, and it still works just fine. However, if you are using appindicator, the widget is simply not shown. No warning or error message is given. It's just not displayed.

For more information, see this post on StackOverflow: http://stackoverflow.com/questions/5685103/putting-other-widgets-in-gtk-menu/5687153