Creating objects using non-creatable classes

• About creating objects using non-creatable classes
  • Adding an object
  • Using non-creatable ArcObjects

Public Class Class1
    
    Public Sub Test()
        
        ' The MapInsetWindowClass is non-creatable and causes a compile time error in
        ' Visual Studio similar to the following:
        ' ESRI.ArcGIS.ArcMapUI.MapInsetWindowClass.Private Sub New()' is not accessable
        ' in this context because it is 'Private'.
        Dim mapInsetWindow As IMapInsetWindow=New MapInsetWindowClass
        
    End Sub
    
End Class

public class Class1
{
    public void test()
    {
        // The MapInsetWindowClass is non-creatable and causes a compile time error in 
        // Visual Studio similar to the following:
        // The type 'ESRI.ArcGIS.ArcMapUI.MapInsetWindowClass' has no constructors defined. 
        IMapInsetWindow mapInsetWindow=new MapInsetWindowClass();
    }
}

1. Locate the interfaces implemented by the specified class (MapInsetWindowClass) that do not end with "events" in the ArcObjects namespace reference help. In this example, the interfaces are IDataWindow, IDataWindow2, ILensWindow, and IMapInsetWindow (see the previous screen shot).
2. Search the help using each of the interface names selected in Step 1 as keywords. Look for help documents that return one or more of these interfaces as a property or method from another object.
   • The key to finding the help document or documents you want from the returned results are those in which the title does not contain Interface in the name and does end with the words Property or Method. These documents will most likely return the desired interface. See the following screen shot:
     
     

Public Class Class1
    
    Public Sub Test(ByVal application As IApplication)
        
        Dim dataWindowFactory As IDataWindowFactory=New MapInsetWindowFactoryClass
        
        ' IDataWindow is an interface on the non-creatable MapInsetWindowClass.
        Dim dataWindow As IDataWindow=dataWindowFactory.Create(application)
        
        ' TypeOf determines if dataWindow interface implements the MapInsetWindowClass.
        If TypeOf dataWindow Is MapInsetWindow Then
            
            ' Cast to different interfaces on the MapInsetWindowClass.
            Dim dataWindow2 As IDataWindow2=CType(dataWindow, IDataWindow2)
            
        End If
        
    End Sub
    
End Class

public class Class1
{

    public void test(IApplication application)
    {
        IDataWindowFactory dataWindowFactory=new MapInsetWindowFactoryClass();

        // IDataWindow is an interface on the non-creatable MapInsetWindowClass.
        IDataWindow dataWindow=dataWindowFactory.Create(application);

        // TypeOf determines if dataWindow interface implements the MapInsetWindowClass.

        if (dataWindow is MapInsetWindow)
        {
            // Cast to different interfaces on the MapInsetWindowClass.
            IDataWindow2 dataWindow2=(IDataWindow2)dataWindow;
        }
    }

}

See Also:

• ESRI.ArcGIS.ArcMapUI
• ESRI.ArcGIS.Carto
• ESRI.ArcGIS.System (ESRI.ArcGIS.esriSystem)
• ESRI.ArcGIS.Framework