Path Gradient
/*
Professional Windows GUI Programming Using C#
by Jay Glynn, Csaba Torok, Richard Conway, Wahid Choudhury,
Zach Greenvoss, Shripad Kulkarni, Neil Whitlow
Publisher: Peer Information
ISBN: 1861007663
*/
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Drawing.Drawing2D; // PathGradientBrush
namespace PathGradient
{
/// <summary>
/// Summary description for PathGradient.
/// </summary>
public class PathGradient : System.Windows.Forms.Form
{
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.Container components = null;
public PathGradient()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
this.Text = "PathGradient - CenterPoint";
//
// TODO: Add any constructor code after InitializeComponent call
//
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
//
// PathGradient
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(256, 213);
this.Name = "PathGradient";
this.Text = "PathGradient";
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new PathGradient());
}
protected override void OnPaint(PaintEventArgs e)
{
Graphics g = e.Graphics;
Font f = new Font(new FontFamily("Times New Roman"), 10);
Brush fb = new SolidBrush(Color.Black);
GraphicsPath gp;
PathGradientBrush pGB; // namespace System.Drawing.Drawing2D;
Rectangle rec;
Color cR = Color.Red, cW = Color.White, cY = Color.Yellow;
int w = 100, h = 70;
// Left upper rectangle:
g.DrawString("Center", f, fb, 10, 5);
gp = new GraphicsPath();
rec = new Rectangle(10, 20, w, h);
gp.AddRectangle(rec);
pGB = new PathGradientBrush(gp);
pGB.CenterPoint = new Point(10 + w/2, 20 + h/2);
pGB.CenterColor = cR;
pGB.SurroundColors = new Color[1]{cW};
g.FillRectangle(pGB, rec);
// Right upper rectangle:
g.DrawString("Center - 2 x 2 Colors", f, fb, w + 20, 5);
gp = new GraphicsPath();
rec = new Rectangle(20 + w, 20, w, h);
gp.AddRectangle(rec);
pGB = new PathGradientBrush(gp);
pGB.CenterPoint = new Point(w + 20 + w/2, 20 + h/2);
pGB.CenterColor = cR;
pGB.SurroundColors = new Color[4]{cW, cY, cW, cY};
g.FillRectangle(pGB, rec);
// Left down rectangle:
g.DrawString("LefTopCenter", f, fb, 10, h + 25);
gp = new GraphicsPath();
rec = new Rectangle(10, h + 40, w, h);
gp.AddRectangle(rec);
pGB = new PathGradientBrush(gp);
pGB.CenterPoint = new Point(10, h + 40);
pGB.CenterColor = cR;
pGB.SurroundColors = new Color[1]{cW};
g.FillRectangle(pGB, rec);
// Ellipse
g.DrawString("Top", f, fb, w + 20, h + 25);
gp = new GraphicsPath();
rec = new Rectangle(w + 20, h + 40, w, h);
gp.AddEllipse(rec);
pGB = new PathGradientBrush(gp);
pGB.CenterPoint = new Point(w + 20 + w/2, h + 40);
pGB.CenterColor = cR;
pGB.SurroundColors = new Color[1]{cW};
g.FillRectangle(pGB, rec);
g.Dispose();
fb.Dispose();
}
}
}
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