FVWM has been working fine in my BLFS 11.3 system for a while. Just the other day, however, I noticed that when I minimized xterm, it didn't use an on-the-fly thumbnail of the xterm window as its icon. In distros (that I have on this computer) it does so. Cool feature so I'd like to have it in my BLFS's FVWM.

My first thought was some option within FVWM, but I'm using a configuration copied over from previous distros.

My second thought is there is a needed dependency for this feature. I'm having trouble figuring this out, since I have many of the dependencies in. Does anyone happen to know what dependency would relate to thumbnailing? I guess features related to a window grab and image resize?

I know this is an obscure question, but I am hoping another BLFS and FVWM user knows this one.

Thank you.

Tried it again. Now FVWM in my 11.3 BLFS is thumbnailing when xterm is minimized. Go figure.