The integration principe is as follows :
Recompile XFaceMaker with an additional function to create a new executable with the new widgets.
The stages are as follows :
1. popen_phigs
2. FmInitialize
3. FmAddWidgetClass
4. FmAddResourceType
5. FmAttchAv
6. FmAttachFunction
7. FmCallEditor
8. pclose_phigs
Then recompile this new program :
cc -o myxfm myxfm.o -lgphigsgui -lFm_e -lXm -lXt -lX11