Re: urgent about STDMETHOD

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From: "Simon Trew" <ten.enagro@werts>
Date: Wed, 11 Jan 2006 02:47:48 -0000

This is used to define a COM interface:

STDMETHOD is a macro that defines the calling conventions of the method
(__stdcall), and its return type (HRESULT).
The "==0" means that the method is not defined(*) in the class being
declared, and must be overridden (redefined) in a class that derives from
this class. In short, the class is an interface and the derived class
implements that interface.

S.

(*) Technically this is called a pure virtual function. It is allowed,
although unusual, to have a definition for a pure virtual function in the
base class-- to give some default functionality that the overriding function
can or must call-- but either way, you still must provide a definition for a
function in some derived class.

.

References:
- urgent about STDMETHOD
  - From: anida

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