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DECLARE_IUNKNOWN

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This macro declares the three methods of the base interface for a new interface.

#define DECLARE_IUNKNOWN

Remarks

When you create a new interface, it must derive from IUnknown, which has three methods: QueryInterface, AddRef, and Release. This macro simplifies the declaration process by declaring each of these methods for the new interface.

Requirements

DirectShow applications and DirectShow filters have different include file and link library requirements. See Setting Up the Build Environment for more information.

OS Versions: Windows CE 2.12 and later. Version 2.12 requires DXPAK 1.0 or later.
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Last updated on Wednesday, April 13, 2005

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