Which IVsHelp Interface methods are supported in Visual Studio 2010?

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Confirming with the VS Platform team, I have the following information.

The following methods are supported in VS 2010:

DisplayTopicFromId()

DisplayTopicFromURL()

DisplayTopicFromF1Keyword()

The following methods are not supported in VS 2010:

DisplayTopicFromURLEx()

DisplayTopicFromKeyword()

DisplayTopicFrom_OLD_Help()

DisplayTopicFromURLEx2()

The methods that are listed as supported above enable integrators who have previously used these methods to keep their code pretty much as is. The implementation underneath has been reworked to work with the new Help system and its API.

For the methods that are listed as not supported, it may be possible to implement your own versions of these methods using the new Help system's query protocol.

Please contact me if you are needing to implement something here and I will do what I can to facilitate. We plan to publish the new query protocol as part of an Help SDK to be made available close to VS 2010 RTM.