problem define Message for User in ATL

hi, all.
i got problem while developing c++ program in vs2005.
i stuck in this problem.
i write code using ATL and connect system tray in taskbar notification area,
but i'm new program using ATL.
so my purpose is user define message in ATL, like ON_MESSAGE in MFC.
i tried to use MESSAGE_HANDLER, but i didnt receive message.
can anybody help me to solve this problem?
regards.
my english is no so good, you understand me.
never mind, i did.
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