I had some customers complaining that tooltips weren’t showing up which could be reproduced on e.g. Win 7 x64 in Ableton Live or iZotope RX6.
Further debugging revealed that in those cases “SendMessage (hwndTT, TTM_ADDTOOL, 0, (LPARAM)&ti)” fails to create the tooltip window in initTooltip() in win32frame.cpp. Replacing “ti.cbSize = sizeof(TOOLINFO);” with “ti.cbSize = TTTOOLINFO_V1_SIZE;” seems to help creating the tooltip container window successfully, which of course isn’t considered a proper bugfix at all, but I still can’t get the tooltips to show. I guess it must have something to do with the minimum ComCtl version a given host is built for.
Any chance in seeing this fixed?