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The callback object associated with the GPMessages object.
[Visual Basic .NET] Public Property Callback As IGPMessagesCallback
[C#] public IGPMessagesCallback Callback {get; set;}
[C++]
HRESULT get_Callback(
IGPMessagesCallback* messagesCallback
);
[C++]
HRESULT putref_Callback(
IGPMessagesCallback** messagesCallback
);
[C++]
Parameters messagesCallback [in]
messagesCallback is a parameter of type IGPMessagesCallback* messagesCallback [out, retval]
messagesCallback is a parameter of type IGPMessagesCallback**