IVsLanguageBlock.GetCurrentBlock Method

Artículo
05/06/2010

Determines the current span of the language block.

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

Syntax

'Declaración
Function GetCurrentBlock ( _
    pTextLines As IVsTextLines, _
    iCurrentLine As Integer, _
    iCurrentChar As Integer, _
    <OutAttribute> ptsBlockSpan As TextSpan(), _
    <OutAttribute> ByRef pbstrDescription As String, _
    <OutAttribute> ByRef pfBlockAvailable As Integer _
) As Integer
'Uso
Dim instance As IVsLanguageBlock
Dim pTextLines As IVsTextLines
Dim iCurrentLine As Integer
Dim iCurrentChar As Integer
Dim ptsBlockSpan As TextSpan()
Dim pbstrDescription As String
Dim pfBlockAvailable As Integer
Dim returnValue As Integer

returnValue = instance.GetCurrentBlock(pTextLines, _
    iCurrentLine, iCurrentChar, ptsBlockSpan, _
    pbstrDescription, pfBlockAvailable)

int GetCurrentBlock(
    IVsTextLines pTextLines,
    int iCurrentLine,
    int iCurrentChar,
    TextSpan[] ptsBlockSpan,
    out string pbstrDescription,
    out int pfBlockAvailable
)

int GetCurrentBlock(
    [InAttribute] IVsTextLines^ pTextLines, 
    [InAttribute] int iCurrentLine, 
    [InAttribute] int iCurrentChar, 
    [OutAttribute] array<TextSpan>^ ptsBlockSpan, 
    [OutAttribute] String^% pbstrDescription, 
    [OutAttribute] int% pfBlockAvailable
)

abstract GetCurrentBlock : 
        pTextLines:IVsTextLines * 
        iCurrentLine:int * 
        iCurrentChar:int * 
        ptsBlockSpan:TextSpan[] byref * 
        pbstrDescription:string byref * 
        pfBlockAvailable:int byref -> int

function GetCurrentBlock(
    pTextLines : IVsTextLines, 
    iCurrentLine : int, 
    iCurrentChar : int, 
    ptsBlockSpan : TextSpan[], 
    pbstrDescription : String, 
    pfBlockAvailable : int
) : int

Parameters

pTextLines
Type: Microsoft.VisualStudio.TextManager.Interop.IVsTextLines
[in] An IVsTextLines object containing the text to examine.

iCurrentLine
Type: System.Int32
[in] Current line position of the cursor.

iCurrentChar
Type: System.Int32
[in] Current character position of the cursor within the line.

ptsBlockSpan
Type: array<Microsoft.VisualStudio.TextManager.Interop.TextSpan[]
[out] Specifies a span of text representing the current language block. For more information, see TextSpan.

pbstrDescription
Type: System.String%
[out] Returns a string containing the description of the language block.

pfBlockAvailable
Type: System.Int32%
[out, retval] Returns non-zero if the block is available. Otherwise, returns zero if the current cursor position does not coincide with a language block.

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 IVsLanguageBlock::GetCurrentBlock(
   [in] IVsTextLines * pTextLines, 
   [in] LONG iCurrentLine, 
   [in] LONG iCurrentChar, 
   [out] TextSpan * ptsBlockSpan, 
   [out] BSTR * pbstrDescription
);

Given the current position, this method returns a TextSpan structure that defines the enclosing or nearby block of text and a short description of the block.

This method is typically called from the view to populate the Find dialog box's "Search only: <current procedure>" option where <current procedure> is the pbstrDescription text. The description should be short due to limited space on the Find dialog box.

The pfBlockAvailable parameter must be set to non-zero when a block is available and zero when the position is outside any blocks. The values of the ptsBlockSpan and pbstrDescription parameters may be a null value indicating those parameters are not wanted by the caller.

.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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