Support for Visual Studio (Not just VSCode!)

[smaillet-ms]

Is your feature request related to a problem? Please describe.
Add support for use with Visual Studio (2019+)

Describe the solution you'd like
Extension to support full MIDL syntax highlighting in Visual Studio

Describe alternatives you've considered
Writing my own... :(

Additional context
The support for syntax highlighting of any MIDL code in VS is pretty limited (to the point of being mostly useless) as we use more things based on MIDL3 it would help a LOT if we had a tool that could properly provide syntax highlighting/intellisense.

[asklar]

thanks @smaillet-ms ! this is something I'm definitely interested in and investigated, but it is currently blocked, as VS does not allow writing an extension that takes over a file type VS says it knows about already, like .idl.

See also:

• https://developercommunity.visualstudio.com/t/Language-Server-protocol-isnt-working-f/1449475
• FeedbackTicket 1342627: Language Server protocol isn't working for file extensions that VS knows about
• How to extend an existing language with an LSP server? microsoft/VSSDK-Extensibility-Samples#201