using System;
using System.Drawing;
using System.Threading;
using System.Windows.Forms;

public class AnimateBall : Form
{
  private int x, y;
  private Button suspend = new Button();
  private Button resume = new Button();
  private Button abort = new Button();
  Thread t;

  public AnimateBall()
  {
    BackColor = Color.White;
    abort.Text = "Сброс";
    suspend.Text = "Пауза";
    resume.Text = "Продолжить";

    int w = 20;
    suspend.Location = new Point(w, 200);
    resume.Location = new Point(w += 10 + suspend.Width, 200);
    abort.Location = new Point(w += 10 + resume.Width, 200);

    abort.Click += new EventHandler(Abort_Click);
    suspend.Click += new EventHandler(Suspend_Click);
    resume.Click += new EventHandler(Resume_Click);

    Controls.Add(suspend);
    Controls.Add(resume);
    Controls.Add(abort);

    t = new Thread(new ThreadStart(Run));
    t.Start();
  }
  protected void Abort_Click(object sender, EventArgs e)
  {
    t.Abort();
  }
  protected void Suspend_Click(object sender, EventArgs e)
  {
    t.Suspend();
  }
  protected void Resume_Click(object sender, EventArgs e)
  {
    t.Resume();
  }
  protected override void OnPaint(PaintEventArgs e)
  {
    Graphics g = e.Graphics;
    g.FillEllipse(Brushes.Red, 100, y, 4, 4);
    base.OnPaint(e);
  }
  public void Run()
  {
    int dx = 2, dy = 2;
    y = 1;

    while (true)
    {
      for (int i = 0; i < 140; i++)
      {
        y += dy;
        Invalidate();
        Thread.Sleep(10);
      }
      dx = -dx; dy = -dy;
    }
  }
  public static void Main()
  {
    Application.Run(new AnimateBall());
  }
}