Visual Studio 2008 Plug-in / Add-in development - Getting Started
An add-in can do most of that. There's a template in VS2008 for creating a base add-in.
I have an add-in that you can download that hooks into the solution/project load events etc - it is free and comes with source code ( http://www.huagati.com/projectloader/download/huagatiprojectloader.zip ). This particular add-in detects when projects/solutions are loaded and pre-loads referenced assemblies to work around a CLR bug that can cause VS2008 to crash. Anyway, the source code for it shows how to detect some of the events you're looking for.
Other than that, the definitive resource on add-in development and all the little quirks and tricks involved is Carlos Quintero's blog ( http://msmvps.com/blogs/carlosq/ ) and the "howto" article series on his website ( http://www.mztools.com/resources_vsnet_addins.aspx ).
Craig Skibo's blog ( http://blogs.msdn.com/craigskibo/ ) also has some useful tips.
You want:
- Visual Studio Extensibility Developer Center
- VSX Forum
- Visual Studio 2008 SDK
- Professional Visual Studio Extensibility by Keyvan Nayyeri
Buy the book, if nothing else.