IVsExpansionClient.GetExpansionFunction Method

Articolo
05/06/2010

Called to obtain an expansion function for the specified code snippet.

Namespace: Microsoft.VisualStudio.TextManager.Interop
Assembly: Microsoft.VisualStudio.TextManager.Interop.8.0 (in Microsoft.VisualStudio.TextManager.Interop.8.0.dll)

Syntax

'Dichiarazione
Function GetExpansionFunction ( _
    xmlFunctionNode As IXMLDOMNode, _
    bstrFieldName As String, _
    <OutAttribute> ByRef pFunc As IVsExpansionFunction _
) As Integer
'Utilizzo
Dim instance As IVsExpansionClient
Dim xmlFunctionNode As IXMLDOMNode
Dim bstrFieldName As String
Dim pFunc As IVsExpansionFunction
Dim returnValue As Integer

returnValue = instance.GetExpansionFunction(xmlFunctionNode, _
    bstrFieldName, pFunc)

int GetExpansionFunction(
    IXMLDOMNode xmlFunctionNode,
    string bstrFieldName,
    out IVsExpansionFunction pFunc
)

int GetExpansionFunction(
    [InAttribute] IXMLDOMNode^ xmlFunctionNode, 
    [InAttribute] String^ bstrFieldName, 
    [OutAttribute] IVsExpansionFunction^% pFunc
)

abstract GetExpansionFunction : 
        xmlFunctionNode:IXMLDOMNode * 
        bstrFieldName:string * 
        pFunc:IVsExpansionFunction byref -> int

function GetExpansionFunction(
    xmlFunctionNode : IXMLDOMNode, 
    bstrFieldName : String, 
    pFunc : IVsExpansionFunction
) : int

Parameters

xmlFunctionNode
Type: IXMLDOMNode
[in] An IXMLDOMNode object that contains the code snippet expansion function definition.

bstrFieldName
Type: System.String
[in] A string containing the name of the default field (the code snippet field that is first highlighted after the code snippet is inserted).

pFunc
Type: Microsoft.VisualStudio.TextManager.Interop.IVsExpansionFunction%
[out] Returns an IVsExpansionFunction object representing the expansion function to use.

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 textmgr2.idl:

HRESULT IVsExpansionClient::GetExpansionFunction(
   [in]IXMLDOMNode* xmlFunctionNode,
   [in] BSTR bstrFieldName,
   [out] IVsExpansionFunction **pFunc
);

A code snippet can specify the name of an expansion function that is "called" to supply a value that is displayed in a code snippet field. This expansion function is represented by the IVsExpansionFunction interface and calling the expansion function means calling the GetCurrentValue method on that interface.

The XML node contains the code snippet's expansion function tag (see Function Element (IntelliSense Code Snippets) for details). It is up to the implementation of the GetExpansionFunction method to parse the expansion function text for its name and any parameters it may require.

.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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