CoGetMarshalSizeMax

HRESULT CoGetMarshalSizeMax(riid, pUnk, dwDestContext, pvDestContext, mshlfags, pulSize)

Return the number of bytes needed to marshal the given interface on the given object. On successful exit, the value pointed to by *pulSize will have been incremented by the number of bytes required.

This function is useful to custom marshaling implementations which themselves internally marshal interface pointers as part of their state.

Argument	Type	Description
riid	REFIID	The interface on the object which is to be marshaled.
pUnk	IUnknown*	An IUnknown (any old one) on the object.
dwDestContext	DWORD	The context into which the object is to be marshaled.
pvDestContext	void *	The context into which the object is to be marshaled.
mshlflags	DWORD	The marshal flags for the marshaling operation
pulSize	ULONG *	The place at which the required size is to be returned.
return value	HRESULT	S_OK, E_NOINTERFACE, E_OUTOFMEMORY, E_UNEXPECTED