How to capture events on tkinter child widgets?

Question

In the following block, clicking on a_frame triggers the event handler on_frame_click, but clicking on a_label which is a child of a

Answer 1

I can't seem to find a direct method of automatically binding to child widgets (though there are methods of binding to an entire class of widgets and to all widgets in an application), but something like this would be easy enough.

def bind_tree(widget, event, callback, add=''):
    "Binds an event to a widget and all its descendants."

    widget.bind(event, callback, add)

    for child in widget.children.values():
        bind_tree(child, event, callback, replace_callback)

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Just thought of this, but you could also put a transparent widget the size of a_frame on top of everything as a child of a_frame and bind the event to that, and then you could refer to a_frame as e.widget.master in the callback in order to make it reusable if necessary. That'd likely do what you want.