Extending DocumentWindow

Docking/MDI for WPF Forum

Posted 11 years ago by Robert A. McCarter
Version: 4.5.0470
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When I create a new DocumentWindow according to your documentation it works fine:

  TextBox content = new TextBox();
  string name = "MyDocumentWindow1";
  string title = "My First Document Window";
  BitmapImage image = new BitmapImage(new Uri("/Images/Test.png", UriKind.Relative);
  DocumentWindow window = new DocumentWindow(dockSite, name, title, image, content);
  window.Activate(true);
However, when I extend the DocumentWindow class with my own class (that had a few additional properties) the tab doesn't appear!

I have removed everything from my DocumentWindow class and it still doesn't work:

  public class TestDocumentWindow :
                  ActiproSoftware.Windows.Controls.Docking.DocumentWindow
  {
     public TestDocumentWindow(DockSite dockSite,
                     string docName, string title,
                     ImageSource imageSource, object content)
    : base(dockSite, docName, title, imageSource, content)
     { // EMPTY
     }
  }
I then modify the original creation code to use TestDocumentWindow rather than just DocumentWindow, and the window appears without a tab.

Are you guys actually checking to ensure it's an instance of a DocumentWindow and not allowing child classes?

Thanks for your assistance.

Sincerely,

Robert

Comments (2)

Posted 11 years ago by Actipro Software Support - Cleveland, OH, USA
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Hi Robert,

Actually this is an issue in general with how WPF doesn't properly apply styles/templates to inherited classes of styled controls.

We have been working on a resolution for it and finally think we came up with something. Our code update will be in the next maintenance release (4.5.471) and will include a QuickStart showing how to create both custom DocumentWindow and ToolWindow classes in XAML/codebehind and use them in a DockSite.


Actipro Software Support

Posted 11 years ago by Robert A. McCarter
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Thank you for taking the time to look into this. :-)
The latest build of this product (v2019.1 build 0681) was released 1 month ago, which was after the last post in this thread.

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