Re: COM object creation code

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#9578

From: Bob Gonder
Date: Mon, 05 Jul 2004 06:58

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Ramon F Herrera wrote:

>valid and proper C++.  Yet, it won't compile for me.
>Perhaps I need some #include?

Yes, quite likely.

>> 
>> http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnwui/html/shellcolhand.asp 
>> class CByteSize : public IUnknown,
>>                   public IPersist,
>>                   public IColumnProvider
>> {
>      [C++ Error] CByteSize.cpp(3): E2303 Type name expected

You are missing the definitions for
 IUnknown,
 IPersist,  and
 IColumnProvider

Putting IPersist in the MSDN Search,  brings me to 
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/com/htm/cmi_n2p_3lbo.asp?frame=true
Where it says:
Header: Declared in objidl.h.

You should be able to do likewise for the other 2 classes.

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From: Bob Gonder <notbg@notmindspring.invalid>
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Subject: Re: COM object creation code
Date: Sun, 04 Jul 2004 23:58:23 -0700
Organization: MindSpring Enterprises, Inc.
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