VSIX. Running a tool OnBuild.

Hi fellow programmers,

I've recently wrote my first VSIX tool. It works just like I wanted it to, it can be run by clicking Tools->MyTool or by hitting a bound key combination.

All the tool does - it generates C# class with constant strings out of INI file sections.

Now I want this tool to run automatically on some "OnBeforeBuild" so a programmer won't have to run this tool manually, but I can't find how do I register this event handler with Visual Studio.

Can anyone help me on this one?

Thank you in advance.

Make assembly, not C++.