How to re-use cancel build functionality in own code?

Hello, All

I want to re-use cancel build functionality (Ctrl+Break) in own code. I have created menu item in main menu and assign event handler to it menu item. Into event handler body I have created thread which execute specified MSBuild task for each projects in solution. This is long operation and I want to abort it by user request.

How to detect Ctrl+Break event from user?

Thanks