IVsTextScanner.Read Method

项目
08/03/2012

Performs a scan of the text buffer, or portion of the text buffer defined by the string length, piLength.

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

Syntax

声明
Function Read ( _
    <OutAttribute> ByRef ppszText As String, _
    <OutAttribute> ByRef piLength As Integer _
) As Integer

int Read(
    out string ppszText,
    out int piLength
)

int Read(
    [OutAttribute] String^% ppszText, 
    [OutAttribute] int% piLength
)

abstract Read : 
        ppszText:string byref * 
        piLength:int byref -> int

function Read(
    ppszText : String, 
    piLength : int
) : int

Parameters

ppszText
Type: System.String%
[out] Range of the text buffer to read.

piLength
Type: System.Int32%
[out] Length of text to read from the buffer.

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 IVsTextScanner::Read(
   [out] WCHAR **ppszText,
   [out] long *piLength
);

The parameter piLength is an integer value for the length of text pointed to by ppszText. If the value is zero, there is no more text.

Note

The text buffer is created by the IVsTextScanner object and the buffer must persist for the life of the IVsTextScanner object or until the CloseScan method is called.

.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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