using System;
using System.Drawing;
using System.Windows.Forms;
class RandomRectangle: Form
{
public static void Main()
{
Application.Run(new RandomRectangle());
}
public RandomRectangle()
{
Text = "Random Rectangle";
Timer timer = new Timer();
timer.Interval = 1;
timer.Tick += new EventHandler(TimerOnTick);
timer.Start();
}
void TimerOnTick(object obj, EventArgs ea)
{
Random rand = new Random();
int x1 = rand.Next(ClientSize.Width);
int x2 = rand.Next(ClientSize.Width);
int y1 = rand.Next(ClientSize.Height);
int y2 = rand.Next(ClientSize.Height);
Color color = Color.FromArgb(rand.Next(256),
rand.Next(256),
rand.Next(256));
Graphics grfx = CreateGraphics();
grfx.FillRectangle(new SolidBrush(color),
Math.Min(x1, x2), Math.Min(y1, y2),
Math.Abs(x2 - x1), Math.Abs(y2 - y1));
grfx.Dispose();
}
}
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