Public Function Add( _
    ByVal PluginID As String, _
    ByVal InitData As System.Object _
) As 

public IAgUiWindow Add(
    string PluginID,
    System.Object InitData
);

public: IAgUiWindow^ Add(
    String __gc ^ PluginID,
    VARIANT InitData
);

public IAgUiWindow add(
    String PluginID,
    VARIANT InitData
);

public: HRESULT Add(
    BSTR PluginID,
    VARIANT InitData,
    IAgUiWindow ** pNewWin
);