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Purpose of afx_msg keyword? |
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znakeeye 
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Joined: 26 July 2006 Status: Offline Points: 1672 |
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 Topic: Purpose of afx_msg keyword?Posted: 17 August 2009 at 10:48am |
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What's the purpose of afx_msg?
E.g.
afx_msg void OnPaint(); Is it merely there to make it easier for VC++ to add message-handlers? Is it even needed in VC++ 2008?
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ABuenger
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Joined: 02 February 2006 Status: Offline Points: 1075 |
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Posted: 17 August 2009 at 11:19am |
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ClassWizard requires that you use the afx_msg keyword in your message map handler declarations.
http://msdn.microsoft.com/en-us/library/0812b0wa(VS.80).aspx |
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znakeeye
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Posted: 18 August 2009 at 6:59am |
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Thanks! I've been looking for that article! :D
Finally I got the answer to why command-handlers are not simply virtual member functions:
"Due to the large number of messages involved, providing a separate virtual function for each Windows message results in a prohibitively large vtable."
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