[Urwid] mouse_event() confusion

[Rebecca Breu]

Hi!

I have a problem with mouse events. I need a ListBox where the right
mouse button selects an entry and does some other stuff. My idea was
to subclass the ListBox and overwrite the mouse_event() like this:


class MyListBox(urwid.ListBox):

    def mouse_event(self, size, event, button, col, row, focus):
        """Third mouse button click selects a widget."""

        if event == "mouse press" and button == 3:
            curses.beep()
	    #Pretend that the left button was pressed:
            return urwid.ListBox.mouse_event(self, size, event, 1, col,
                                             row, focus)
        else:
            return urwid.ListBox.mouse_event(self, size, event, button, col,
                                             row, focus)


The problem: When I put the MyListBox into a Columns widget together
with another selectable widget, and that other widget is focused, then
right-clicking into the MyListBox doesn't change the focus (but I can
hear the beep). Whereas, when the focus is already in the MyListBox,
a right-click beeps and changes the focus as expected.

Another thing I noticed is that the mouse_event() functions seem to
return False all of the time. I understand that they should return True
if a key was handled? :-/

I attached the whole example program. Thanks in advance.


Rebecca


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