René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"IDLE bindings for scrolling using buttons 4 and 5 should only apply to X11","articleBody":"\u003c!--\r\n  If you're new to Python and you're not sure whether what you're experiencing is a bug, the CPython issue tracker is not\r\n  the right place to seek help. Consider the following options instead:\r\n\r\n  - reading the Python tutorial: https://docs.python.org/3/tutorial/\r\n  - posting in the \"Users\" category on discuss.python.org: https://discuss.python.org/c/users/7\r\n  - emailing the Python-list mailing list: https://mail.python.org/mailman/listinfo/python-list\r\n  - searching our issue tracker (https://github.com/python/cpython/issues) to see if\r\n    your problem has already been reported\r\n--\u003e\r\n\r\n# Bug report\r\n\r\nOn X11, vertical scrolling is conventionally done using events for mouse “buttons” 4 and 5. But on Win32 and Aqua, which have a dedicated event for scrolling (`\u003cMouseWheel\u003e` in Tk), buttons 4 and 5 correspond to additional hardware buttons present on some mice. Tk 8.6 and earlier do not abstract away these platform differences, so bindings in IDLE for scrolling should ignore buttons 4 and 5 on non-X11.\r\n\r\nAccordingly, idlelib.idle_test.test_sidebar.ShellSidebarTest.test_mousewheel should be revised to check the windowing system, so that it correctly distinguishes between Aqua and XQuartz (which `sys.platform == 'darwin'` does not do), sends button 4/5 events on X11 only, and sends `\u003cMouseWheel\u003e` with the correct sign for `delta` on Aqua.\r\n\r\nTk 8.7 ([TIP 474](https://core.tcl-lang.org/tips/doc/trunk/tip/474.md)) will change mouse events to be consistent across windowing systems. This requires further revisions, but I imagine it is better to separately address issues for Tk ≤ 8.6 first.\r\n\r\n\r\n\u003c!--\r\nYou can freely edit this text. Remove any lines you believe are unnecessary.\r\n--\u003e\r\n\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-103821\n* gh-114901\n* gh-114902\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/chrstphrchvz","@type":"Person","name":"chrstphrchvz"},"datePublished":"2023-04-25T03:01:13.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/103820/cpython/issues/103820"}