GiD reads several files with postprocess info in a GiD-defined format.
As the information is really in a very easy format, your code (or one interface program), should write the results of your analysis in GiD postprocessing format. It is very easy to do it. Some people have modified their code for GiD in 2-3 hours. The GiD postprocessing format is defined in the reference manual and in the interactive help.
We also provide source code of the 'gidpost' library, to be linked to your C/C++/FORTRAN program, in order to write posprocess results files (ASCII and compressed binary)
Find all information inside Support->Tools of the web page www.gidhome.com
Some externals result formats can be also imported in postprocess: