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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"matplotlib selector widget is not visible with blitting and wxpython","articleBody":"### Bug report\r\n\r\nThe following code example uses the RectangleSelector widget, so that we should see a continuously updated rectangular patch over the plot. However, nothing can be seen, unless we set `useblit=False`.\r\n\r\n**Code for reproduction**\r\n\r\n```python\r\n#!/usr/bin/env python3\r\n\r\nimport matplotlib\r\nfrom matplotlib.widgets import RectangleSelector\r\n\r\nif __name__ == '__main__':\r\n    matplotlib.use('wxagg')\r\n    import matplotlib.pyplot as plt\r\n    figure = plt.figure()\r\n    rect = RectangleSelector(figure.gca(), (lambda e1, e2: print(e1, e2)), useblit=True)\r\n    plt.show()\r\n```\r\n\r\n**Matplotlib version**\r\n  * Operating system: ubuntu 17.10\r\n  * Matplotlib version: 2.2.2\r\n  * Matplotlib backend: wxagg\r\n  * Python version: 3.6.3\r\n  * Other libraries: wxpython 4.0.1\r\n\r\nEverything was installed from virtualenv + pip.\r\n","author":{"url":"https://github.com/tavin","@type":"Person","name":"tavin"},"datePublished":"2018-06-12T19:27:20.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":9},"url":"https://github.com/11425/matplotlib/issues/11425"}