>If there a way to check, if specified constant is already defined? For instance, when my program was a separate program, it blowed on AFIELDS_WIDTH constant. Now I included it into the long utility file which includes foxpro.h in one of its functions. I had a separate define for this constant, but now it tells me, that the constant is defined.

In VFP 8 or later, highlight the constant, right-click and choose View Definition. That will search the project or the folder hierarchy and find the place the constant is defined.

Tamar