PS: Graphical externals in flext please! :)
Hi Ben, in my section of the PD cvs there's still the project guitest which is exactly that. It's abandoned since i decided to go a different way, but it still compiles.
There is flgui.{c,h} which is the flext base class, and flguiobj.{c,h} which defines some graphics primitives. main.cpp implements a very simple graphical (fl)external.
A number of unresolved problems are remaining though, for example where to make the distinction between message- and dsp-based external but it should give you an impression how to start.....
good luck, Thomas