keyboard input

[Maximilian Schneider <max schneidersoft net>]

Hello!

I'm working on a CAD like program using input elements similar to
inkscape; clicking the rectangle button or pushing the 'r' key.

Whats the best way to implement something like this in C? I've taken a
look at the inkscape source, but it being in C++, I can't make much use
of it.

Thanks.

M.S.