Line 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; // LinearGradientBrush
namespace LinGradient
{
/// <summary>
/// Summary description for LinGradient.
/// </summary>
public class LinGradient : System.Windows.Forms.Form
{
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.Container components = null;
public LinGradient()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
this.Text = "LinearGradientMode";
//
// 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()
{
//
// LinGradient
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(256, 205);
this.Name = "LinGradient";
this.Text = "LinGradient";
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new LinGradient());
}
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);
LinearGradientBrush lGB; // namespace System.Drawing.Drawing2D;
Color cR = Color.Red, cW = Color.White;
int w = 100, h = 70;
// Left upper rectangle:
g.DrawString("Horizontal", f, fb, 10, 5);
Rectangle rec = new Rectangle(10, 20, w, h);
LinearGradientMode lGM = LinearGradientMode.Horizontal;
lGB = new LinearGradientBrush(rec, cR, cW, lGM);
g.FillRectangle(lGB, rec);
// Right upper rectangle:
g.DrawString("Vertical", f, fb, w + 20, 5);
rec.Offset(w + 10, 0);
lGM = LinearGradientMode.Vertical;
lGB = new LinearGradientBrush(rec, cR, cW, lGM);
g.FillRectangle(lGB, rec);
// Left down rectangle:
g.DrawString("ForwardDiagonal", f, fb, 10, h + 25);
rec.Offset(-w - 10, h + 20);
lGM = LinearGradientMode.ForwardDiagonal;
lGB = new LinearGradientBrush(rec, cR, cW, lGM);
g.FillRectangle(lGB, rec);
// Right down rectangle:
g.DrawString("BackwardDiagonal", f, fb, w + 20, h + 25);
rec.Offset(w + 10, 0);
lGM = LinearGradientMode.BackwardDiagonal;
lGB = new LinearGradientBrush(rec, cR, cW, lGM);
g.FillRectangle(lGB, rec);
fb.Dispose();
g.Dispose();
}
}
}
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