Corrected wxTreeCtrl::DoGetBestSize(), added DoGetBestClientWidth (PR #26097)
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RobertRoeb
Jan 13, 2026, 5:13:56 AM (yesterday) Jan 13
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For the generic wxTreeCtrl:
- Corrected ::DoGetBestSize(), added DoGetBestClientWidth
- Adapted both to the same calculation of the required virtual size that is used in AdjustScrollbars() removing the need for adding magic 4
- Now, importantly, wxTreeBook actually calls a real DoGetBestClientWidth() based on a known height and can correctly figure out if a vertical scrollbar is needed
- This removes the ugly horizontal scrollbar in wxTreeBook when a the horizontal scrollbar appears.
- Tested on macOS 26
You can view, comment on, or merge this pull request online at:
https://github.com/wxWidgets/wxWidgets/pull/26097
Commit Summary
- 178a27f Corrected wxGenericTreeCtrl::DoGetBestSize(), added DoGetBestClientWidth()
File Changes
(2 files)
- M include/wx/generic/treectlg.h (3)
- M src/generic/treectlg.cpp (52)
Patch Links:
- https://github.com/wxWidgets/wxWidgets/pull/26097.patch
- https://github.com/wxWidgets/wxWidgets/pull/26097.diff
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