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NF:objidl.IMallocSpy.PreFree |
IMallocSpy::PreFree (objidl.h) |
Performs operations required before calling IMalloc::Free. This method ensures that the pointer passed to Free points to the beginning of the actual allocation. |
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com\imallocspy_prefree.htm |
com |
528eedac-e8cc-4dc7-8287-c023ebefb72c |
12/05/2018 |
IMallocSpy interface [COM],PreFree method, IMallocSpy.PreFree, IMallocSpy::PreFree, PreFree, PreFree method [COM], PreFree method [COM],IMallocSpy interface, _com_imallocspy_prefree, com.imallocspy_prefree, objidl/IMallocSpy::PreFree |
objidl.h |
Windows |
Windows 2000 Professional [desktop apps only] |
Windows 2000 Server [desktop apps only] |
ObjIdl.idl |
Windows |
19H1 |
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Performs operations required before calling IMalloc::Free. This method ensures that the pointer passed to Free points to the beginning of the actual allocation.
A pointer to the block of memory that the caller is passing to Free.
Indicates whether the block of memory to be freed was allocated while the current spy was active.
The value to be passed to IMalloc::Free.
If IMallocSpy::PreAlloc modified the original allocation request passed to IMalloc::Alloc (or IMalloc::Realloc), PreFree must supply a pointer to the actual allocation, which COM will pass to IMalloc::Free. For example, if the PreAlloc/PostAlloc pair attached a header used to store debug information to the beginning of the caller's allocation, PreFree must return a pointer to the beginning of this header so that all of the block that was allocated can be freed.