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POPython tkinter: stopping event propagation in text widgets tags
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  1. POPython tkinter: stopping event propagation in text widgets tags
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    copied!<p>I'm currently writing a color scheme editor. For the preview of the scheme, I use a text widget, where I insert text with the corresponding color tags (which I generate programmatically). </p> <p>What I want is the following behaviour:</p> <ul> <li>click anywhere on the text widget where no text is: change background color</li> <li>click on text inserted with a tag: change tags corresponding foreground color</li> </ul> <p><strong>Now here's my problem:</strong></p> <p>When I click on a tagged text, the callback of the tag is called. So far so good. But then, the callback of the text widget is called as well, although I return "break" in the tags callback method (which should stop further event handling). <em>How can I stop this?</em></p> <p>To illustrate this specific problem, I wrote this working example (for Python 2 &amp; 3):</p> <pre><code>#!/usr/bin/env python try: from Tkinter import * from tkMessageBox import showinfo except ImportError: from tkinter import * from tkinter.messagebox import showinfo def on_click(event, widget_origin='?'): showinfo('Click', '"{}"" clicked'.format(widget_origin)) return 'break' root = Tk() text = Text(root) text.pack() text.insert(CURRENT, 'Some untagged text...\n') text.bind('&lt;Button-1&gt;', lambda e, w='textwidget': on_click(e, w)) for i in range(5): tag_name = 'tag_{}'.format(i) text.tag_config(tag_name) text.tag_bind(tag_name, '&lt;Button-1&gt;', lambda e, w=tag_name: on_click(e, w)) text.insert(CURRENT, tag_name + ' ', tag_name) root.mainloop() </code></pre> <p>Any help is appreciated!</p> <p><em>Edit: Tried Python 2 as well.</em></p>
 

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