[quote user="Jon Summers"]Bentley tell us that the user customisation tools, which create a UI in a DGNLib, should be our first port of call.[/quote]
Correct
[quote user="Jon Summers"]If you look in the \MicroStation\Telerik folder, you will see a heap of DLLs in the Telerik namespace. Visit Telerik to find more about that. I think their stuff is .NET rather than C++.[/quote]
Caution. Bentley licenses Telerik controls for use within our products. We do not provide Bentley API wrappers for those controls due to our licensing agreement. Direct referencing and linking is discouraged unless a 3rd party developer has an active development license to consume and distribute Telerik controls - for their own applications.