René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[Bug]: rcParam `tk.window_focus: True` is causes crash on Linux in version 3.9.0.","articleBody":"### Bug summary\n\nSetting `tk.window_focus` to `True` in `matplotlibrc` or `matplotlib.rcParams` causes a crash when plotting on a Linux system with matplotlib 3.9.0.\n\n### Code for reproduction\n\n```Python\nimport matplotlib as mpl\r\n\r\n# I removed my system-wide matplotlibrc file for this test, but the same\r\n# behavior is produced when the following are set in matplotlibrc instead.\r\nmpl.use('TkAgg')\r\nmpl.rcParams['tk.window_focus'] = True\r\n\r\nimport matplotlib.pyplot as plt\r\n\r\nplt.plot([1, 2, 3])\r\nplt.show()\n```\n\n\n### Actual outcome\n\nNo plot is produced, and a `TypeError` is thrown with the following traceback:\r\n\r\n```\r\nTraceback (most recent call last):\r\n  File \"/home/zach/temp/mpl-test/test.py\", line 10, in \u003cmodule\u003e\r\n    plt.plot([1, 2, 3])\r\n  File \"/home/zach/.local/share/venvs/c1078f6cd069ee2916e64fe0fd9fd7f2/venv/lib/python3.12/site-packages/matplotlib/pyplot.py\", line 3708, in plot\r\n    return gca().plot(\r\n           ^^^^^\r\n  File \"/home/zach/.local/share/venvs/c1078f6cd069ee2916e64fe0fd9fd7f2/venv/lib/python3.12/site-packages/matplotlib/pyplot.py\", line 2656, in gca\r\n    return gcf().gca()\r\n           ^^^^^\r\n  File \"/home/zach/.local/share/venvs/c1078f6cd069ee2916e64fe0fd9fd7f2/venv/lib/python3.12/site-packages/matplotlib/pyplot.py\", line 1088, in gcf\r\n    return figure()\r\n           ^^^^^^^^\r\n  File \"/home/zach/.local/share/venvs/c1078f6cd069ee2916e64fe0fd9fd7f2/venv/lib/python3.12/site-packages/matplotlib/pyplot.py\", line 1022, in figure\r\n    manager = new_figure_manager(\r\n              ^^^^^^^^^^^^^^^^^^^\r\n  File \"/home/zach/.local/share/venvs/c1078f6cd069ee2916e64fe0fd9fd7f2/venv/lib/python3.12/site-packages/matplotlib/pyplot.py\", line 545, in new_figure_manager\r\n    return _get_backend_mod().new_figure_manager(*args, **kwargs)\r\n           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\r\n  File \"/home/zach/.local/share/venvs/c1078f6cd069ee2916e64fe0fd9fd7f2/venv/lib/python3.12/site-packages/matplotlib/backend_bases.py\", line 3521, in new_figure_manager\r\n    return cls.new_figure_manager_given_figure(num, fig)\r\n           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\r\n  File \"/home/zach/.local/share/venvs/c1078f6cd069ee2916e64fe0fd9fd7f2/venv/lib/python3.12/site-packages/matplotlib/backend_bases.py\", line 3526, in new_figure_manager_given_figure\r\n    return cls.FigureCanvas.new_manager(figure, num)\r\n           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\r\n  File \"/home/zach/.local/share/venvs/c1078f6cd069ee2916e64fe0fd9fd7f2/venv/lib/python3.12/site-packages/matplotlib/backend_bases.py\", line 1811, in new_manager\r\n    return cls.manager_class.create_with_canvas(cls, figure, num)\r\n           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\r\n  File \"/home/zach/.local/share/venvs/c1078f6cd069ee2916e64fe0fd9fd7f2/venv/lib/python3.12/site-packages/matplotlib/backends/_backend_tk.py\", line 479, in create_with_canvas\r\n    with _restore_foreground_window_at_end():\r\n  File \"/usr/lib/python3.12/contextlib.py\", line 144, in __exit__\r\n    next(self.gen)\r\n  File \"/home/zach/.local/share/venvs/c1078f6cd069ee2916e64fe0fd9fd7f2/venv/lib/python3.12/site-packages/matplotlib/backends/_backend_tk.py\", line 48, in _restore_foreground_window_at_end\r\n    _c_internal_utils.Win32_SetForegroundWindow(foreground)\r\nTypeError: Win32_SetForegroundWindow(): incompatible function arguments. The following argument types are supported:\r\n    1. (hwnd: capsule) -\u003e None\r\n\r\nInvoked with: None\r\n```\n\n### Expected outcome\n\nThe following figure is produced with the same code using matplotlib 3.8.4:\r\n\r\n![Figure_1](https://github.com/matplotlib/matplotlib/assets/22459166/36dd15b4-0b80-4a1a-b3aa-15de5760dbdf)\r\n\n\n### Additional information\n\nThe bug occurs in Linux with matplotlib 3.9.0, when `tk.window_focus` is `True` in `matplotlibrc` or `matplotlib.rcParams`. The appropriate plot is produced if either of these conditions is changed, i.e. both of the following produce the correct plot:\r\n- matplotlib 3.8.4 with `tk.window_focus: True`\r\n- matplotlib 3.9.0 with `tk.window_focus: False`\r\n\r\nI think the bug is related to https://github.com/matplotlib/matplotlib/commit/0097b024305c2866464516db839f7c033dcaa73d, though I'm not quite sure how to fix it.\n\n### Operating system\n\nArch Linux\n\n### Matplotlib Version\n\n3.9.0\n\n### Matplotlib Backend\n\ntkagg\n\n### Python version\n\nPython 3.12.3\n\n### Jupyter version\n\n_No response_\n\n### Installation\n\npip","author":{"url":"https://github.com/Z2h-A6n","@type":"Person","name":"Z2h-A6n"},"datePublished":"2024-06-11T14:53:41.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":4},"url":"https://github.com/28374/matplotlib/issues/28374"}