This class implements IAtlMemMgr using the COM memory allocation functions.
This class and its members cannot be used in applications that execute in the Windows Runtime.
Call this method to allocate a block of memory.
Call this method to free a block of memory allocated by this memory manager.
Call this method to get the allocated size of a memory block allocated by this memory manager.
Call this method to reallocate memory allocated by this memory manager.
See the example for IAtlMemMgr.