[PATCH v7 0/4] MR11491: comctl32/listbox: Fix SetRedraw top item handling

[Tobi Laskowski (＠tobil)]

The old code was not correct for multicolumn listboxes, so it caused the items to be displayed at an incorrect offset.

LISTBOX_GetMaxTopIndex implements special cases for MULTICOLUMN and OWNERDRAWVARIABLE listboxes, allowing the top item to remain consistent.

The fix is taken from the following bug report: https://bugs.winehq.org/show_bug.cgi?id=59591

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  v7: user32/listbox: Fix SetRedraw top item handling
      comctl32/listbox: Fix SetRedraw top item handling
      user32/tests: Check multicolumn listbox redraw
      comctl32/tests: Check multicolumn listbox redraw
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/11491