CompuServe Messages

Hi, I am having a problem with memory allocation a deletion. I am getting an assert error in AFXMEM.CPP at line 370. Using MSVC for NT 1.1. This indicates that the doublely linked list is mixed up. The previous pointer for the current block is NULL, but the first block pointer doesn't point to this block. I would like to create my own version of AfxCheckMemory that keeps track of the previous block and checks the previous pointer of each block. The only problem is that I can't get access to pFirstBlock variable. I get an unresolved reference using the following: extern struct CBlockHeader* pFirstBlock; I have also tried with "C". Question 1: How can my routine get access to pFirstBlock that is defined in AFXMEM.CPP? Question 2: Should I instead modify AfxMemoryCheck and recompile MFC? Question 3: Should this test be added by MS to MFC? The code, untested, is as follows: struct CBlockHeader* pPrev = NULL; if (p->pBlockHeaderPrev != pPrev) { TRACE("Previous block error\n"; \\ Better error message needed okay = FALSE; } pPrev = p; Any suggestions? Mark Skoglund SandS Software