IUnknown::AddRef Function

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Increments the reference count. This function keeps track of the number of clients using this object. The client should call AddRef() whenever it makes a copy of the interface pointer. This way, the object knows how many copies of the object pointer are in use.

Syntax

ULONG IUnknown::AddRef(VOID);

Return Values

Return Values

ULONG

The return value is the updated reference count.