This class implements IAtlMemMgr using the Win32 heap allocation functions.
CWin32Heap implements memory allocation methods using the Win32 heap allocation functions, including HeapAlloc and HeapFree. Unlike other Heap classes, CWin32Heap requires a valid heap handle to be provided before memory is allocated: the other classes default to using the process heap. The handle can be supplied to the constructor or to the CWin32Heap::Attach method. See the CWin32Heap::CWin32Heap method for more details.