Launching xdiskusage from IceWM menu
 

How should I set up my ~.icewm/menu file in order to be able to launch xdiskusage from it? This line only opens a transparent window titled "xdiskusage". I found that will launch xdiskusage properly, but an annoying terminal window is opened at the same time, and cannot be closed without also closing xdiskusage.

Have you tried just doing:

Yes, that was the first thing I tried. It also results in the transparent window.