Installs a client-defined allocation function by hooking it into the C runtime debug memory allocation process (debug version only).

_CRT_ALLOC_HOOK _CrtSetAllocHook (
     _CRT_ALLOC_HOOK pfnNewHook
);

Parameters

pfnNewHook

New client-defined allocation function to hook into the C runtime debug memory allocation process.

Return Values

The previously defined allocation hook function

Success.

NULL

Failure; the value of pfnNewHook is NULL.

Requirements