C / C++ / MFC

FILE *_AllocHookFile = NULL;
bool _AllocHookFileClose = false;

void _AllocHookInitialize()
{
    _AllocHookFile = fopen("AllocHook.Log","w");
    _CrtSetAllocHook(_AllocHook);
}

void _AllocHookTerminate()
{
    _AllocHookFileClose = true;

    if (_AllocHookFile != NULL) {
        fclose(_AllocHookFile);
        _AllocHookFile = NULL;
    }
}

int _AllocHook(int allocType, 
               void *userData, 
               size_t size, 
               int blockType, 
               long requestNumber, 
               const unsigned char *filename, 
               int lineNumber)
{
    if (requestNumber == 87) DebugBreak();

    if (blockType == _CRT_BLOCK) return TRUE;
    if (_AllocHookFileClose)     return TRUE;

    long        _request    = requestNumber;
    char        _allocType  = '?';
    char        _blockType  = '?';
    int         _size       = size;
    char        *_filename  = (char *)filename;
    int         _line       = lineNumber;

    switch (allocType) {
        case _HOOK_ALLOC:   _allocType = 'A';   break;
        case _HOOK_REALLOC: _allocType = 'R';   break;
        case _HOOK_FREE:    _allocType = 'F';   break;
    }

    switch (blockType) {
        case _FREE_BLOCK:   _blockType = 'F';   break;
        case _NORMAL_BLOCK: _blockType = 'N';   break;
        case _IGNORE_BLOCK: _blockType = 'I';   break;
        case _CLIENT_BLOCK: _blockType = 'C';   break;
    }

    if (allocType == _HOOK_FREE) {

        if (_size == 0) {
            _size = _msize_dbg(userData,blockType);
        }
            
        if (userData != NULL) {

            typedef struct _CrtMemBlockHeader
            {
               struct _CrtMemBlockHeader *pBlockHeaderNext; 
               struct _CrtMemBlockHeader *pBlockHeaderPrev; 
               char *szFileName;   // File name
               int nLine;          // Line number
               size_t nDataSize;   // Size of user block
               int nBlockUse;      // Type of block
               long lRequest;      // Allocation number
               unsigned char gap[4];  
            } _CrtMemBlockHeader;

            _CrtMemBlockHeader *header = (((_CrtMemBlockHeader *)userData)-1);

            if (_filename == NULL) {
                _filename = header->szFileName;
            }

            if (_line == 0) {
                _line     = header->nLine;
            }

            if (_request == 0) {
                _request = header->lRequest;
            }

        }

    }

    fprintf(_AllocHookFile,"%10d %10d %c %c %s;%d\n",
            _request,_size,_allocType,_blockType,_filename,_line);

    return TRUE;
}

<br />
BOOL CYourClass::OnInitDialog() {<br />
BOOL nRet = CPropertyPage::OnInitDialog(); // Call the base class init<br />
SetDefID(IDOK); // Set the default button<br />
return nRet;<br />
}<br />