What is the best portable desktop UI C lib that runs on each *nix?
Usually I take #GTK, but as each #Linux or #BSD comes with another version, compiling becomes cumbersome.

It's only about dialogs with textboxes and buttons.

Then I remembered: #X11 comes with X Toolkits.
Athena #Xaw and #Motif Xm* should be supported everywhere. Looking a bit old, but they are simple to code and lightweight.

Let's write some #CPP Motif apps 😁!
I last saw Xt-APIs in 2007, so its time to refresh my knowledge.