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Built desktop apps crash when refilling a ListBox with PaintCellBackground
- Status
- Fixed
- Fixed in
- v26.10.1
- Area
- desktop
- Source discussion
- https://forum.objo.dev/d/1215-listbox-crashes-the-built-app-when-a-paintcellbackground-handler-exists
- Last updated
- 2026-10-05
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Public summary
A built desktop app can crash when code refills a ListBox that has a PaintCellBackground handler, even when the handler simply returns False. Clearing rows, changing the column count, and adding rows should leave the app running and the ListBox painting correctly.