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Article #10689

Re: BCB6 custom message handler

#10689
From: Uriah Liggett
Date: Thu, 25 Mar 2004 14:55
30 lines
2118 bytes
Thanks! That fixed the problem.


Remy Lebeau (TeamB) wrote:
> "Uriah Liggett" <uriahliggett@crosswinds.net> wrote in message
> news:4061bf1f@newsgroups.borland.com...
> 
> 
>>[C++ Error] frmMsgHndlr.h(36): E2219 Wrong number of
>>arguments in call of macro 'MESSAGE_HANDLER'
> 
> 
> Are you, by chance, using the ATL in your project?  The ATL has its own
> MESSAGE_HANDLER macro which is not compatible with the MESSAGE_HANDLER that
> you are trying to use.  Which is why the VCL has a separate
> VCL_MESSAGE_HANDLER macro for this purpose:
> 
>     VCL_MESSAGE_HANDLER( UPDATE_GUI_PRIMARY_HOST, TMessage,
> UpdateGUIPrimaryHost )
> 
> VCL_MESSAGE_HANDLER does all of the actual work for a VCL message map.  When
> ATL is not used, MESSAGE_HANDLER is just a #define for VCL_MESSAGE_HANDLER.
> But when ATL is used, MESSAGE_HANDLER is the ATL's MESSAGE_HANDLER, not the
> VCL's.  As such, you should always use VCL_MESSAGE_HANDLER when putting a
> message map into a VCL class, then you don't have to worry about this issue.
> 
> 
> Gambit
> 
> 
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Date: Thu, 25 Mar 2004 09:55:10 -0500
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Subject: Re: BCB6 custom message handler
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