I know, a good software developer is supposed to do the structure charts before the actual programming. But I'm still learning and a lazy one as well and now I have to document a project and have to do about 10-30 (rough estimation) of those charts.

I'm not sure if you're familiar with the term structure chart I just let dict.leo.org translate it from the German word "Struktogramm". Maybe you're more familiar with the term flow chart.

What I'm meaning is something like this:

http://www.plauener.de/lessing/delphi/dreiana2.gif

Sorry for the German but I think you get the idea

Well I'm in desperate need of a tool that I can easily create such things and so far I have only found some Windows versions that don't do it cause they're either too expensive and/or do not do it in a satisfying way.

A program that converts my C++ code directly would be nice but is not a necessity.

A search for it on Freshmeat and Sourceforge didn't turn out anything useful but that could be due to the fact that it's not a standard part of my vocabulary. That's why I hope you native English speakers will do better.

I've also looked into Doxygen and similar programs linked on its webpage but they all are good for documentation (I use Doxygen to format my code in HTML e.g.) but no charts or something like it.

Thank you very much if you have an idea