Lines. Set Language ServiceID(Guid)
Sets the unique identifier of the language that is providing colorization and other attribute data to the buffer.
public int SetLanguageServiceID (ref Guid guidLangService);
[in] Identifier of the language service. Buffers without languages can be CLSID_NULL.
HRESULT IVsTextLines::SetLanguageServiceID( [in] REFGUID guidLangService );
This method could require considerable resources, depending upon the underlying implementation of the buffer. That is, it could be very difficult to calculate the size of the buffer if it is a virtual-line-oriented implementation of the buffer, as in Visual Basic.