I've attempted to write an extension (provide my own IReferenceProvider, an IVsReference, and an IVsReferenceProviderContext) in order to extend the project "Add Reference" UI as described here under "Adding a Custom tab":
http://msdn.microsoft.com/en-us/library/hh873125.aspx
It doesn't appear that my reference provider is ever loaded from my package when running from the debugger. (I'd also note that the links to IVsAssemblyReferenceProviderContext etc on that page are broken).
Is there an additional step/mechanism needed to register my IReferenceProvider within my package in order to get it picked up? Is there a example package project out there showing how "Add Reference" can be extended in VS2012?
Thanks,
Matt Wilson
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A few additional notes, my project is set up as a C# Visual Studio package and I'm using Visual Studio .NET 2012 Update #2 running on Windows 7 x64.
I've tried the code contained here (out of desperation--VS2012 appears to have a different API):
Customize the 'Add Reference' dialog in VSPackage (CSVSPackageAddReferenceTab)
http://code.msdn.microsoft.com/CSVSPackageAddReferenceTab-cf6f3d4d