April 18, 2026
10:16 p.m.
Per MSDN, TTM_SETTITLE with a NULL or empty title string should suppress both the title row and any associated icon. Previously an empty string was treated the same as a non-empty title, causing the icon to still be displayed and the tooltip to be incorrectly sized. Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=58236 Signed-off-by: Larry Starr <Larry_A_Starr@yahoo.com> -- v5: comctl32/tooltips: suppress icon and title when title is NULL or empty. comctl32/tooltips/tests: add regression test for TTM_SETTITLE with NULL or empty title. https://gitlab.winehq.org/wine/wine/-/merge_requests/10340