CodeModel.AddFunction Method

Creates a new function code construct and inserts the code in the correct location.

Namespace:  EnvDTE
Assembly:  EnvDTE (in EnvDTE.dll)

Syntax

'Declaration
Function AddFunction ( _
    Name As String, _
    Location As Object, _
    Kind As vsCMFunction, _
    Type As Object, _
    Position As Object, _
    Access As vsCMAccess _
) As CodeFunction

CodeFunction AddFunction(
    string Name,
    Object Location,
    vsCMFunction Kind,
    Object Type,
    Object Position,
    vsCMAccess Access
)

CodeFunction^ AddFunction(
    String^ Name, 
    Object^ Location, 
    vsCMFunction Kind, 
    Object^ Type, 
    Object^ Position, 
    vsCMAccess Access
)

abstract AddFunction : 
        Name:string * 
        Location:Object * 
        Kind:vsCMFunction * 
        Type:Object * 
        Position:Object * 
        Access:vsCMAccess -> CodeFunction 

function AddFunction(
    Name : String, 
    Location : Object, 
    Kind : vsCMFunction, 
    Type : Object, 
    Position : Object, 
    Access : vsCMAccess
) : CodeFunction

Parameters

• Name
  Type: System.String
  Required. The name of the new function.

• Location
  Type: System.Object
  Required. The path and file name for the new function definition. Depending on the language, the file name is either relative or absolute to the project file. The file is added to the project if it is not already a project item. If the file cannot be created and added to the project, then AddFunction fails.

• Kind
  Type: EnvDTE.vsCMFunction
  Required. The vsCMFunction constant indicating the type of function, such as whether the function is a property-get or a method.

• Type
  Type: System.Object
  Required. A vsCMTypeRef constant indicating the data type that the function returns. This can be a CodeTypeRef object, a vsCMTypeRef constant, or a fully qualified type name.

• Position
  Type: System.Object
  Optional. Default = 0. The code element after which to add the new element. If the value is a CodeElement, then the new element is added immediately after it.
  If the value is a Long data type, then AddFunction indicates the element after which to add the new element.
  Because collections begin their count at 1, passing 0 indicates that the new element should be placed at the beginning of the collection. A value of -1 means that the element should be placed at the end.

• Access
  Type: EnvDTE.vsCMAccess
  Optional. A vsCMAccess constant.

Return Value

Type: EnvDTE.CodeFunction
A CodeFunction object.

Remarks

The following code adds an overload operator by using vsCMFunction.vsCMFunctionOperator.

Sub testAddOverloadOperatorCPP()

Dim fcm As FileCodeModel = _

DTE.ActiveDocument.ProjectItem.FileCodeModel

Dim cc As CodeClass = fcm.CodeElements.Item("someClassName")

cc.AddFunction("+", vsCMFunction.vsCMFunctionOperator, _

vsCMTypeRef.vsCMTypeRefInt)

'cc.AddFunction("someFunction +", _

vsCMFunction.vsCMFunctionFunction, vsCMTypeRef.vsCMTypeRefInt)

End Sub

In this instance, you must explicitly specify the name of the function you want to overload (in this case, "someFunction") in the call to AddFunction, not just the overload operator itself.

Using the above code as an example, cc.AddFunction("+", vsCMFunction.vsCMFunctionOperator,...) does not work. You must instead use cc.AddFunction("someFunction +", vsCMFunction.vsCMFunctionFunction,...)

Only Visual C++ implements AddFunction, because C#, Visual Basic, and J# do not allow top-level functions.

Native Native Visual C++ requires the colon-separated (::) format for its fully qualified type names.

Note

The values of code model elements such as classes, structs, functions, attributes, delegates, and so forth can be non-deterministic after making certain kinds of edits, meaning that their values cannot be relied upon to always remain the same. For more information, see the section Code Model Element Values Can Change in Discovering Code by Using the Code Model (Visual Basic).

Examples

Sub AddFunctionExample(ByVal dte As DTE2)

    ' Before running this example, open a code document from a project.
    Try
        Dim projItem As ProjectItem = dte.ActiveDocument.ProjectItem
        Dim cm As CodeModel = projItem.ContainingProject.CodeModel

        ' Create a new function.
        cm.AddFunction("TestFunction", projItem.Name, _
            vsCMFunction.vsCMFunctionFunction, _
            vsCMTypeRef.vsCMTypeRefInt)
    Catch ex As Exception
        MsgBox(ex.Message)
    End Try

End Sub

public void AddFunctionExample(DTE2 dte)
{
    // Before running this example, open a code document from 
    // a project.
    try
    {
        ProjectItem projItem = dte.ActiveDocument.ProjectItem;
        CodeModel cm = projItem.ContainingProject.CodeModel;

        // Create a new function.
        cm.AddFunction("TestFunction", projItem.Name, _
            vsCMFunction.vsCMFunctionFunction, _
            vsCMTypeRef.vsCMTypeRefInt, -1, _
            vsCMAccess.vsCMAccessDefault);
    }
    catch (Exception ex)
    {
        MessageBox.Show(ex.Message);
    }
}

.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.

See Also

Reference

CodeModel Interface

EnvDTE Namespace

Other Resources

How to: Compile and Run the Automation Object Model Code Examples

Discovering Code by Using the Code Model (Visual Basic)

Discovering Code by Using the Code Model (Visual C#)