base.OnKeyPress(e);
    }




    /// <summary>
    /// Handle system keystrokes (ie, alt-enter)
    /// </summary>
    protected override void OnKeyDown(System.Windows.Forms.KeyEventArgs e)
    {
        if ((e.Alt) && (e.KeyCode == System.Windows.Forms.Keys.Return))
        {
            // Toggle the fullscreen/window mode
            if (active && ready)
            {
                Pause(true);

                try
                {
                    ToggleFullscreen();
                    Pause(false);                        
                    return;
                }
                catch
                {
                    HandleSampleException(new ResetFailedException(), ApplicationMessage.ApplicationMustExit);
                }
                finally
                {
                    e.Handled = true;
                }
            }
        }
        else if (e.KeyCode == System.Windows.Forms.Keys.F2)
        {
            DoSelectNewDevice();
        }

        // Allow the control to handle the keystroke now
        base.OnKeyDown(e);
    }




    /// <summary>
    /// Winforms generated code for initializing the form
    /// </summary>
    private void InitializeComponent()
    {
		this.components = new System.ComponentModel.Container();
		this.mnuMain = new System.Windows.Forms.MainMenu();
		this.mnuFile = new System.Windows.Forms.MenuItem();
		this.mnuGo = new System.Windows.Forms.MenuItem();
		this.mnuSingle = new System.Windows.Forms.MenuItem();
		this.mnuBreak1 = new System.Windows.Forms.MenuItem();
		this.mnuChange = new System.Windows.Forms.MenuItem();
		this.mnuBreak2 = new System.Windows.Forms.MenuItem();
		this.mnuExit = new System.Windows.Forms.MenuItem();
		this.updateTimer = new System.Windows.Forms.Timer(this.components);
		// 
		// mnuMain
		// 
		this.mnuMain.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																				this.mnuFile});
		// 
		// mnuFile
		// 
		this.mnuFile.Index = 0;
		this.mnuFile.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																				this.mnuGo,
																				this.mnuSingle,
																				this.mnuBreak1,
																				this.mnuChange,
																				this.mnuBreak2,
																				this.mnuExit});
		this.mnuFile.Text = "&File";
		// 
		// mnuGo
		// 
		this.mnuGo.Index = 0;
		this.mnuGo.Text = "&Go/stop\tEnter";
		this.mnuGo.Click += new System.EventHandler(this.ToggleStart);
		// 
		// mnuSingle
		// 
		this.mnuSingle.Index = 1;
		this.mnuSingle.Text = "&Single step\tSpace";
		this.mnuSingle.Click += new System.EventHandler(this.SingleStep);
		// 
		// mnuBreak1
		// 
		this.mnuBreak1.Index = 2;
		this.mnuBreak1.Text = "-";
		// 
		// mnuChange
		// 
		this.mnuChange.Index = 3;
		this.mnuChange.Shortcut = System.Windows.Forms.Shortcut.F2;
		this.mnuChange.Text = "&Change Device...";
		this.mnuChange.Click += new System.EventHandler(this.UserSelectNewDevice);
		// 
		// mnuBreak2
		// 
		this.mnuBreak2.Index = 4;
		this.mnuBreak2.Text = "-";
		// 
		// mnuExit
		// 
		this.mnuExit.Index = 5;
		this.mnuExit.Text = "E&xit\tESC";
		this.mnuExit.Click += new System.EventHandler(this.ExitSample);
		// 
		// updateTimer
		// 
		this.updateTimer.Enabled = true;
		this.updateTimer.Interval = 20;
		this.updateTimer.Tick += new System.EventHandler(this.timer1_Tick);
		// 
		// GraphicsSample
		// 
		this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
		this.ClientSize = new System.Drawing.Size(528, 422);
		this.MinimumSize = new System.Drawing.Size(100, 100);
		this.Name = "GraphicsSample";
		this.Closing += new System.ComponentModel.CancelEventHandler(this.GraphicsSample_Closing);
		this.Load += new System.EventHandler(this.GraphicsSample_Load);

	}




    /// <summary>
    /// When the menu is starting pause our simulation
    /// </summary>
    protected override void OnMenuStart(System.EventArgs e)
    {
        Pause(true); // Pause the simulation while the menu starts
    }




    /// <summary>
    /// When the menu is complete our simulation can continue
    /// </summary>
    protected override void OnMenuComplete(System.EventArgs e)
    {
        Pause(false); // Unpause the simulation 
    }




    /// <summary>
    /// Make sure our graphics cursor (if available) moves with the cursor
    /// </summary>
    protected override void OnMouseMove(System.Windows.Forms.MouseEventArgs e)
    {
        if ((device != null) && (!device.Disposed))
        {
            // Move the D3D cursor
            device.SetCursorPosition(e.X, e.Y, false);
        }
        // Let the control handle the mouse now
        base.OnMouseMove(e);
    }




    /// <summary>
    /// Handle size changed events
    /// </summary>
    protected override void OnSizeChanged(System.EventArgs e)
    {
        this.OnResize(e);
        base.OnSizeChanged(e);
    }




    /// <summary>
    /// Handle resize events
    /// </summary>
    protected override void OnResize(System.EventArgs e)
    {
        if (isHandlingSizeChanges)
        {
            // Are we maximized?
            isMaximized = (this.WindowState == System.Windows.Forms.FormWindowState.Maximized);
            if (!isMaximized)
            {
                storedSize = this.ClientSize;
                storedLocation = this.Location;
            }
        }
        active = !(this.WindowState == System.Windows.Forms.FormWindowState.Minimized || this.Visible == false);
        base.OnResize(e);
    }




    /// <summary>
    /// Once the form has focus again, we can continue to handle our resize
    /// and resets..
    /// </summary>
    protected override void OnGotFocus(System.EventArgs e)
    {
        isHandlingSizeChanges = true;
        isWindowActive = true;
        base.OnGotFocus (e);
    }




    /// <summary>
    /// Handle move events
    /// </summary>
    protected override void OnMove(System.EventArgs e)
    {
        if (isHandlingSizeChanges)
        {
            storedLocation = this.Location;
        }
        base.OnMove(e);
    }




    /// <summary>
    /// Handle closing event
    /// </summary>
    protected override void OnClosing(System.ComponentModel.CancelEventArgs e)
    {
        isClosing = true;
        base.OnClosing(e);
    }
    #endregion

	private void GraphicsSample_Load(object sender, System.EventArgs e)
	{
	
	}

	virtual public void OnUpdateTimer(object sender, System.EventArgs e) 
	{
	}

	private void timer1_Tick(object sender, System.EventArgs e)
	{
		OnUpdateTimer(sender, e);
	}

	private void GraphicsSample_Closing(object sender, System.ComponentModel.CancelEventArgs e)
	{
		updateTimer.Enabled = false;
	}


}

#region Enums for D3D Applications
/// <summary>
/// Messages that can be used when displaying an error
/// </summary>
public enum ApplicationMessage 
{ 
    None, 
    ApplicationMustExit, 
    WarnSwitchToRef
};
#endregion




#region Various SampleExceptions
/// <summary>
/// The default sample exception type
/// </summary>
public class SampleException : System.ApplicationException
{
    /// <summary>
    /// Return information about the exception
    /// </summary>
    public override string Message 
    { 
        get 
        { 
            string strMsg = string.Empty;

            strMsg = "Generic application error. Enable\n";
            strMsg += "debug output for detailed information.";

            return strMsg;
        } 
    }
}




/// <summary>
/// Exception informing user no compatible devices were found
/// </summary>
public class NoCompatibleDevicesException : SampleException
{
    /// <summary>
    /// Return information about the exception
    /// </summary>
    public override string Message
    {
        get
        {
            string strMsg = string.Empty;
            strMsg = "This sample cannot run in a desktop\n";
            strMsg += "window with the current display settings.\n";
            strMsg += "Please change your desktop settings to a\n";
            strMsg += "16- or 32-bit display mode and re-run this\n";
            strMsg += "sample.";

            return strMsg;
        }
    }
}




/// <summary>
/// An exception for when the ReferenceDevice is null
/// </summary>
public class NullReferenceDeviceException : SampleException
{
    /// <summary>
    /// Return information about the exception
    /// </summary>
    public override string Message
    {
        get
        {
            string strMsg = string.Empty;
            strMsg = "Warning: Nothing will be rendered.\n";
            strMsg += "The reference rendering device was selected, but your\n";
            strMsg += "computer only has a reduced-functionality reference device\n";
            strMsg += "installed.  Install the DirectX SDK to get the full\n";
            strMsg += "reference device.\n";

            return strMsg;
        }
    }
}




/// <summary>
/// An exception for when reset fails
/// </summary>
public class ResetFailedException : SampleException
{
    /// <summary>
    /// Return information about the exception
    /// </summary>
    public override string Message
    {
        get
        {
            string strMsg = string.Empty;
            strMsg = "Could not reset the Direct3D device.";

            return strMsg;
        }
    }
}




/// <summary>
/// The exception thrown when media couldn't be found
/// </summary>
public class MediaNotFoundException : SampleException
{
    private string mediaFile;
    public MediaNotFoundException(string filename) : base()
    {
        mediaFile = filename;
    }
    public MediaNotFoundException() : base()
    {
        mediaFile = string.Empty;
    }


    
    
    /// <summary>
    /// Return information about the exception
    /// </summary>
    public override string Message
    {
        get
        {
            string strMsg = string.Empty;
            strMsg = "Could not load required media.";
            if (mediaFile.Length > 0)
                strMsg += string.Format("\r\nFile: {0}", mediaFile);

            return strMsg;
        }
    }
}
#endregion