using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
class StarGradientBrush: Form
{
public static void Main()
{
Application.Run(new StarGradientBrush());
}
public StarGradientBrush()
{
ResizeRedraw = true;
}
protected override void OnPaint(PaintEventArgs pea)
{
DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
}
protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
{
Point[] apt = new Point[5];
for (int i = 0; i < apt.Length; i++)
{
double dAngle = (i * 0.8 - 0.5) * Math.PI;
apt[i] = new Point(
(int)(cx * (0.50 + 0.48 * Math.Cos(dAngle))),
(int)(cy * (0.50 + 0.48 * Math.Sin(dAngle))));
}
PathGradientBrush pgbrush = new PathGradientBrush(apt);
pgbrush.CenterColor = Color.White;
pgbrush.SurroundColors = new Color[1] { Color.Black };
grfx.FillRectangle(pgbrush, 0, 0, cx, cy);
}
}