I want to write debug output for the Messages filter of the error list window

Hi

I am writing a pre-build tool for my c++ Project and I want it to show build messages in the same way as the compiler does.

I have found this page that tells how to format debug output text for being shown as error or warning on the error list window

http://msdn.microsoft.com/en-us/yxkt8b26

Though what I would like is my output to be shown on the Messages filter of the same window. Is there any way to do so?