python: make gtk example work on Windows and macOS (#116)
python: make gtk example work on Windows and macOS (#116)

The requested GdkWindow.get_handle is not implemented for GdkWin32Window,
and GdkQuartzWindow.get_xid() returns garbage. In both cases we need to
extract the correct handle (hwnd or NSView* respectively) from the
entrails of gdk, which can be done with ctypes.
oaubert/python-vlc,oaubert/python-vlc