title: Hosting ActiveX control in WPF
body: <p>I have an ActiveX control (written in Delphi) which I want to host in a WPF application. When I try to load it into the toolbox to add it to the XAML at design time, it is not shown in the list of available controls. Does anyone know what filters this list and why I can't see the control to add it?</p>
  
  <p><strong>Edit</strong></p>
  
  <p>This is where I get to - the <code>host.Child = (ax);</code> statement gets an error (Cannot implicitly convert type 'DemoFrameControl.DemoFrameCtrl' to 'System.Windows.Forms.Control'), hope this helps clarify my problem</p>
  
  <pre><code>    private void WindowLoaded(object sender, RoutedEventArgs e)
      {
          // Create the interop host control.
          System.Windows.Forms.Integration.WindowsFormsHost host =
              new System.Windows.Forms.Integration.WindowsFormsHost();
  
          // Create the ActiveX control.
          DemoFrameControl.DemoFrameCtrl ax = new DemoFrameControl.DemoFrameCtrl();
  
          // Assign the ActiveX control as the host control's child.
          host.Child = (ax);
  
          // Add the interop host control to the Grid
          // control's collection of child controls.
          this.grid1.Children.Add(host);
  
          // Play a .wav file with the ActiveX control.
          //axWmp.URL = @"C:\WINDOWS\Media\Windows XP Startup.wav";
      }
  </code></pre>
  
  <p>Thanks</p>