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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Double-click events are not recognised in Jupyter notebook","articleBody":"\u003c!--To help us understand and resolve your issue, please fill out the form to the best of your ability.--\u003e\r\n\u003c!--You can feel free to delete the sections that do not apply.--\u003e\r\n\r\n### Bug report\r\n\r\n**Bug summary**\r\n\r\nUsing the first example from the [events documentation](https://matplotlib.org/3.3.1/users/event_handling.html) detects double-click events properly in the Qt backend, but when used in a Jupyter notebook, the two clicks are recognised as two separate single click events.\r\n\r\n**Code for reproduction**\r\n\r\nI've adapted the code to show the contents of the `event` as the figure title instead of a `print` statement, because the output of `print` statements inside functions triggered by events disappear in Jupyter notebooks.\r\n\r\n```python\r\nimport matplotlib.pyplot as plt\r\nimport numpy as np\r\nfig, ax = plt.subplots()\r\nax.plot(np.random.rand(10))\r\n\r\ndef onclick(event):\r\n    ax.set_title('%s click: button=%d, x=%d, y=%d, xdata=%f, ydata=%f' %\r\n          ('double' if event.dblclick else 'single', event.button,\r\n           event.x, event.y, event.xdata, event.ydata))\r\n\r\ncid = fig.canvas.mpl_connect('button_press_event', onclick)\r\n```\r\n\r\n**Actual outcome**\r\n\r\nThe title always says `single-click`, no matter how fast I do my double-clicking.\r\n\r\n![Screenshot at 2020-09-04 08-02-20](https://user-images.githubusercontent.com/39047984/92204984-ffa02300-ee84-11ea-9f2d-c4a932cc91cc.png)\r\n\r\nThe double click events are properly captured when using the standard Qt window renderer.\r\nI have tried both the default `%matplotlib notebook` backend and the `ipympl` widget backend, and they show identical behaviour.\r\n\r\n**Matplotlib version**\r\n\u003c!--Please specify your platform and versions of the relevant libraries you are using:--\u003e\r\n  * Operating system: Ubuntu 20.04\r\n  * Matplotlib version: 3.2.2\r\n  * Matplotlib backend (`print(matplotlib.get_backend())`): nbAgg, ipympl\r\n  * Python version: 3.7.6\r\n  * Jupyter version (if applicable): jupyter_client=6.1.6, jupyter_core=4.6.3, notebook=6.0.3\r\n  * Other libraries: \r\n\r\n\u003c!--Please tell us how you installed matplotlib and python e.g., from source, pip, conda--\u003e\r\n\u003c!--If you installed from conda, please specify which channel you used if not the default--\u003e\r\nInstalled in a `conda` env from `conda-forge`.\r\n","author":{"url":"https://github.com/nvaytet","@type":"Person","name":"nvaytet"},"datePublished":"2020-09-04T06:09:22.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":5},"url":"https://github.com/18404/matplotlib/issues/18404"}