IVsLanguageContextProvider.UpdateLanguageContext Method

Article
2013-03-11

Provides context from the language service to the Visual Studio core editor.

Namespace: Microsoft.VisualStudio.TextManager.Interop
Assembly: Microsoft.VisualStudio.TextManager.Interop (in Microsoft.VisualStudio.TextManager.Interop.dll)

Syntax

'Declaration
Function UpdateLanguageContext ( _
    dwHint As UInteger, _
    pBuffer As IVsTextLines, _
    ptsSelection As TextSpan(), _
    pUC As Object _
) As Integer

int UpdateLanguageContext(
    uint dwHint,
    IVsTextLines pBuffer,
    TextSpan[] ptsSelection,
    Object pUC
)

int UpdateLanguageContext(
    unsigned int dwHint, 
    IVsTextLines^ pBuffer, 
    array<TextSpan>^ ptsSelection, 
    Object^ pUC
)

abstract UpdateLanguageContext : 
        dwHint:uint32 * 
        pBuffer:IVsTextLines * 
        ptsSelection:TextSpan[] * 
        pUC:Object -> int

function UpdateLanguageContext(
    dwHint : uint, 
    pBuffer : IVsTextLines, 
    ptsSelection : TextSpan[], 
    pUC : Object
) : int

Parameters

dwHint
Type: System.UInt32
[in] Value indicating whether this is a typical idle-time update of the context bag or a request for F1 Help. For a list of dwHint values, see LanguageContextHint.

pBuffer
Type: Microsoft.VisualStudio.TextManager.Interop.IVsTextLines
[in] Text buffer in question.

ptsSelection
Type: array<Microsoft.VisualStudio.TextManager.Interop.TextSpan[]
[in] Relevant range of text within the buffer (that is, the context).

pUC
Type: System.Object
[in, out] Pointer to the context bag on the Visual Studio core text editor.

Return Value

Type: System.Int32
If the method succeeds, it returns S_OK. If it fails, it returns an error code.

Remarks

COM Signature

From textmgr.idl:

HRESULT IVsLanguageContextProvider::UpdateLanguageContext(
   DWORD dwHint, 
   IVsTextLines *pBuffer, 
   TextSpan *ptsSelection
);

UpdateLanguageContext return values:

S_OK: the implementer has added whatever context should be added.

Any other success code: forbidden (caller will assert).

Any failure code: means the implementer is "passing" on this opportunity to provide context and the text editor will fall back to other mechanisms.

.NET Framework Security

Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

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