Basic WinForms control to contain a SWF Flash object.

WinFormsFlashControl.cs

partial class WinFormsFlashControl :System.Windows.Forms.UserControl
{
    private Uri _source;

    /// <summary>
    /// Gets or sets the path to the .swf file.
    /// </summary>
    /// <exception cref="FileNotFoundException">Occurs when
    /// the specified file is not found.</exception>
    public Uri Source
    {
        get { return _source; }
        set
        {
            _source = value;
            flash_control.LoadMovie(0, value.LocalPath);
            flash_control.Stop();
        }
    }

    public WinFormsFlashControl()
    {
        InitializeComponent();
    }
    
    /// <summary>
    /// Plays or resumes the movie.
    /// </summary>
    public void Play()
    {
        flash_control.Play();
    }

    /// <summary>
    /// Pauses the movie. To resume it, 
    /// call <see cref="Play()"/>.
    /// </summary>
    public void Pause()
    {
        flash_control.Stop();
    }

    /// <summary>
    /// Stops the movie.
    /// </summary>
    public void Stop()
    {
        flash_control.Stop();
        flash_control.FrameNum = 0;
    }
}

Where does WindowsFormFlashControl come from?