CodeModel.AddFunction Method

Reference

Definition

Namespace:: EnvDTE

Assembly:: EnvDTE.dll

Assembly:: Microsoft.VisualStudio.Interop.dll

Important

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

EnvDTE::CodeFunction AddFunction(std::wstring const & Name, winrt::Windows::Foundation::IInspectable const & Location, EnvDTE::vsCMFunction Kind, winrt::Windows::Foundation::IInspectable const & Type, winrt::Windows::Foundation::IInspectable const & Position, EnvDTE::vsCMAccess Access = EnvDTE.vsCMAccess.vsCMAccessDefault);

[System.Runtime.InteropServices.DispId(9)]
public EnvDTE.CodeFunction AddFunction (string Name, object Location, EnvDTE.vsCMFunction Kind, object Type, object Position, EnvDTE.vsCMAccess Access = EnvDTE.vsCMAccess.vsCMAccessDefault);

[<System.Runtime.InteropServices.DispId(9)>]
abstract member AddFunction : string * obj * EnvDTE.vsCMFunction * obj * obj * EnvDTE.vsCMAccess -> EnvDTE.CodeFunction

Public Function AddFunction (Name As String, Location As Object, Kind As vsCMFunction, Type As Object, Optional Position As Object, Optional Access As vsCMAccess = EnvDTE.vsCMAccess.vsCMAccessDefault) As CodeFunction

Parameters

Name: String

Required. The name of the new function.

Location: 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(String, Object, vsCMFunction, Object, Object, vsCMAccess) fails.

Kind: vsCMFunction

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

Type: 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: 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(String, Object, vsCMFunction, Object, Object, vsCMAccess) 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: vsCMAccess

Optional. A vsCMAccess constant.

Returns

CodeFunction

A CodeFunction object.

Attributes: DispIdAttribute

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);  
    }  
}

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).

Applies to