[VB]VSIX Example Using TextDocumentKeyPressEvents

I am working on learning to make VSIX Extensions for Visual Studio 2017, and need to figure out how to handle the TextDocumentKeyPressEvents (BeforeKeyPress & AfterKeyPress) that are triggered when the user types text. I have tried everything I have been able to find, but cannot get the events to fire. What I would like to be able to find is a simple, straightforward example that does nothing other than handle these events. Are there any good examples for this? Thanks.

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Nathan Sokalski njsokalski@hotmail.com http://www.nathansokalski.com/