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                     MFC Logging Example documentation
                     =================================
                            by Craig Rodrigues <[e-mail]>
		               2002/08/02

The example in this directory is a Microsoft
Foundation Class (MFC) example which illustrates how to
write an ACE_Log_Msg_Callback which can
send debug output to the Microsoft debugger console.

This is very useful when debugging an MFC GUI-based application
which uses ACE.

NOTES
=====
 - Make sure that $ACE_ROOT/ace/acemfcd.lib is built before building this
   example.  Follow the instructions in $ACE_ROOT/ACE-INSTALL.html for building
   ACE with Visual C++.  Do a Batch Build of ACE, and make sure that you build
   the target "ACE DLL - Win32 MFC Debug".
 - We must call ACE::init() and ACE::fini() in the right places
   otherwise we will get strange crashes and memory leaks
   when invoking ACE_Log_Msg::instance().
   A good place to invoke these methods is in the method which overrides
   CWinApp::InitInstance().
   In this example, we invoke these methods in CLog_Msg_MFCApp::InitInstance().

 - We must set the ACE_Log_Msg singleton to use our callback with:
    ACE_Log_Msg::instance()->msg_callback( &m_mfc_logger );
    ACE_Log_Msg::instance()->set_flags( ACE_Log_Msg::MSG_CALLBACK );

   This is also done in CLog_Msg_MFCApp::InitInstance().


THANKS
======
Thanks to the following people who provided assistance on the ACE
mailing list:
Chris Hafey <[e-mail]>
Don Hinton <[e-mail]>