This sample is demostrating how to create an event in a DLL file and afterward how to call this event from a client program. Hope it can help you to understand the DLL event mechanism and CALLBACK term in VC++.

DllTest
.......\CallDllEvent
.......\............\CallDllEvent.aps
.......\............\CallDllEvent.clw
.......\............\CallDllEvent.cpp
.......\............\CallDllEvent.dsp
.......\............\CallDllEvent.h
.......\............\CallDllEvent.plg
.......\............\CallDllEvent.rc
.......\............\CallDllEventDlg.cpp
.......\............\CallDllEventDlg.h
.......\............\Debug
.......\............\.....\CallDllEvent.exe
.......\............\.....\DllEvent.dll
.......\............\ReadMe.txt
.......\............\res

.......\............\...\CallDllEvent.rc2
.......\............\resource.h
.......\............\StdAfx.cpp
.......\............\StdAfx.h
.......\DllEvent
.......\........\Debug
.......\........\.....\DllEvent.dll
.......\........\.....\DllEvent.lib
.......\........\DllEvent.cpp
.......\........\DllEvent.def
.......\........\DllEvent.dsp
.......\........\DllEvent.dsw
.......\........\DllEvent.h
.......\........\DllEvent.ncb
.......\........\DllEvent.opt
.......\........\DllEvent.plg
.......\........\ReadMe.txt
.......\........\StdAfx.cpp
.......\........\StdAfx.h

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