Received via mail from Justin A. justin.xxx@xxx.com:

I’ve been a fan and user of qdirstat for a little while now. I recently switched to a 4K monitor and when I run qdirstat now, the fonts that are used for the menus and other text is so small that it is not readable, even on my fairly large monitor.

I cannot figure out how to configure the fonts and other gui features of qdirstat. I’ve tried to google search and looked through the github documentation but I don’t see any information there.

My setup is that I’m using SUSE x86-64_linux_4.12_ImageSLES12SP5 , with the “XFCE4” window manager. The window manager settings for fonts/sizes don’t have any effect on the menu/text fonts of the qdirstat application.

Moved to this issue tracker to share the answer with other users who have the same question.