At work we have started to revive one of our older research codes. The
main part is in C. Its GUI has to be made with use of the Tcl/Tk to be
compatible with our other GUI stuff.
So I spent two afternoons in making of a Tk-based GUI. I also have
found how much I forgot about the Tcl! It is quite simple language but
I still need to re-read some introductory books...
Anyway, I still like the Tk for its ability to easily construct working
GUI with just a few lines of human-readable code.
P.S. Written on the Palm IIIx (stylus + graffiti).