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Add/Remove of function impossible, parent class readonly

I am trying to use VC++ 2003 .NET to add the OnQueryEndSession event handler to an MFC Dialog program using the Messages button of the Dialog properties window. I keep getting the message, Add/Remove of function impossible, parent class is readonly.

I have to admit that I am quite lost as the error message makes no sense to me. Can someone help?

Karen
Nov 16 '05 #1
0 1334

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