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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Threading;
namespace Balls
{
public partial class Form1: Form
{
class Ball
{
int x, y; //
int dx, dy; // -
int w, h; //
public bool live; //
public delegate void DlTp();// ()
//
// Invalidate()
public DlTp dl;
public Thread thr; //
|
|
|
//
void FnThr()
{
while (live)
{ //
if (x < 0 || x > 200) dx = -dx;
if (y < 0 || y > 200) dy = -dy;
//
x += dx;
y += dy;
Thread.Sleep(100);//
dl(); // Invalidate()
}
w = h = 0; //
dl(); // Invalidate()
}
//
public void DrawBall(Graphics dc)
{
dc.DrawEllipse(Pens.Magenta, x, y, w, h);
}
//
public Ball(int xn, int yn, int wn, int hn, int dxn, int dyn)
{
x = xn; y = yn; w = wn; h = hn; dx = dxn; dy = dyn;//
thr = new Thread(new ThreadStart(FnThr)); //
live = true; //
thr.Start(); //
}
}
Ball[] bl = new Ball[10];// Ball
public Form1()
{
InitializeComponent();
for (int j = 0; j < bl.Length; j++)
{
//
bl[j] = new Ball(j, j * 10, 10, 10, j + 1, j + 1);
//
bl[j].dl += new Ball.DlTp(Invalidate);
}
}
private void Form1_Paint(object sender, PaintEventArgs e)
{
for (int j = 0; j < bl.Length; j++)
{
bl[j].DrawBall(e.Graphics);//
}
}
private void button1_Click(object sender, EventArgs e)
{
for (int j = 0; j < bl.Length; j++)
{
bl[j].live = false;//
}
}
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
for (int j = 0; j < bl.Length; j++)
{
bl[j].live = false;//
}
}
}
}
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