CodeModel.AddInterface(String, Object, Object, Object, vsCMAccess) Method

Reference

Definition

Namespace:: EnvDTE

Assembly:: EnvDTE.dll

Assembly:: Microsoft.VisualStudio.Interop.dll

Package:: Microsoft.VisualStudio.Interop v17.12.40391

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

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

EnvDTE::CodeInterface AddInterface(std::wstring const & Name, winrt::Windows::Foundation::IInspectable const & Location, winrt::Windows::Foundation::IInspectable const & Position, winrt::Windows::Foundation::IInspectable const & Bases, EnvDTE::vsCMAccess Access = EnvDTE.vsCMAccess.vsCMAccessDefault);

[System.Runtime.InteropServices.DispId(8)]
public EnvDTE.CodeInterface AddInterface (string Name, object Location, object Position, object Bases, EnvDTE.vsCMAccess Access = EnvDTE.vsCMAccess.vsCMAccessDefault);

[<System.Runtime.InteropServices.DispId(8)>]
abstract member AddInterface : string * obj * obj * obj * EnvDTE.vsCMAccess -> EnvDTE.CodeInterface

Public Function AddInterface (Name As String, Location As Object, Optional Position As Object, Optional Bases As Object, Optional Access As vsCMAccess = EnvDTE.vsCMAccess.vsCMAccessDefault) As CodeInterface

Parameters

Name: String

Required. The name of the interface to add.

Location: Object

Required. The path and file name for the new interface 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 AddInterface(String, Object, Object, Object, vsCMAccess) fails.

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 AddInterface(String, Object, 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.

Bases: Object

Optional. Default value is Nothing. A variant that holds a SafeArray of fully qualified type names or CodeInterface objects from which the new interface derives.

Access: vsCMAccess

Optional. A vsCMAccess constant.

Returns

CodeInterface

A CodeInterface object.

Attributes: DispIdAttribute

Examples

Sub AddInterfaceExample(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  

        ' Initialize the base interfaces array.  
        Dim bases() As Object = { _  
            ConvertFullName(cm, "System.IDisposable"), _  
            ConvertFullName(cm, "System.IComparable") _  
        }  

        ' Create a new class.  
        cm.AddInterface("TestInterface", projItem.Name, , bases)  
    Catch ex As Exception  
        MsgBox(ex.Message)  
    End Try  

End Sub  

Function ConvertFullName(ByVal cm As CodeModel, _  
    ByVal fullName As String) As String  

    ' Convert a .NET type name into a C++ type name.  
    If (cm.Language = CodeModelLanguageConstants.vsCMLanguageVC) Or _  
        (cm.Language = CodeModelLanguageConstants.vsCMLanguageMC) Then  
        Return fullName.Replace(".", "::")  
    Else  
        Return fullName  
    End If  

End Function

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

        // Initialize the base interfaces array.  
        object[] bases = {  
            ConvertFullName(cm, "System.IDisposable"),   
            ConvertFullName(cm, "System.IComparable")  
        };  

        // Create a new class.  
        cm.AddInterface("TestInterface", projItem.Name, -1, bases,   
            vsCMAccess.vsCMAccessPublic);  
    }  
    catch (Exception ex)  
    {  
        MessageBox.Show(ex.Message);  
    }  
}  

string ConvertFullName(CodeModel cm, string fullName)  
{  
    // Convert a .NET type name into a C++ type name.  
    if ((cm.Language == CodeModelLanguageConstants.vsCMLanguageVC) ||   
        (cm.Language == CodeModelLanguageConstants.vsCMLanguageMC))  
        return fullName.Replace(".", "::");  
    else  
        return fullName;  
}

Remarks

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

The correctness of the arguments is determined by the language behind the code model.

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

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