Total Commander

[Configuration]
Tips=3
FileTipWindows=1
Win32TipWindows=1

[AllResolutions]
FontName=微软雅黑
...
FontNameTip=微软雅黑

"微软雅黑" is the Chinese name for "Microsoft YaHei". It takes effect everywhere except for the tooltip: https://i.postimg.cc/7hz3PW4j/3.png

In the screenshot, the file list display is good, also the tooltip of Windows Explorer. The tooltip of TC somehow uses the font SimSun (aka 宋体). TC 32-bit correctly shows the tooltip.

OS info: Windows 10 1909 64-bit, Simplified Chinese edition.

I will check it, thanks! Did you try with the English font name?

Yes, I tried Microsoft YaHei and Tahoma, and the tooltip font was not affected (for TC 64-bit only).