form1.cs

来自「《c#技术内幕代码》」· CS 代码 · 共 102 行

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Drawing.Imaging;
using System.Drawing.Drawing2D;

namespace CH11_Gradient
{
	/// <summary>
	/// Summary description for Form1.
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;

		public Form1()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

			//
			// 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()
		{
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(768, 533);
			this.Name = "Form1";
			this.Text = "Form1";
			this.Paint += new System.Windows.Forms.PaintEventHandler(this.OnPaint);

		}
		#endregion

		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}

		private void OnPaint(object sender, System.Windows.Forms.PaintEventArgs e)
		{
			Rectangle rect = this.ClientRectangle; 
			// draw a graphic path with bezier curves 
			GraphicsPath path = new GraphicsPath(new Point[] { 
						 new Point(40, 140), new Point(275, 200), 
						 new Point(105, 225), new Point(190, ClientRectangle.Bottom), 
						 new Point(50, ClientRectangle.Bottom), new Point(20, 180), }, 
		 				 new byte[] { 
						  (byte)PathPointType.Start, 
						  (byte)PathPointType.Bezier, 
						  (byte)PathPointType.Bezier, 
						  (byte)PathPointType.Bezier, 
						  (byte)PathPointType.Line, 
						  (byte)PathPointType.Line, 
			}); 

			PathGradientBrush pgb = new PathGradientBrush(path); 
			pgb.SurroundColors = new Color[] { Color.Green,Color.Yellow,Color.Red, Color.Blue, 
												 Color.Orange, Color.White, }; 
			e.Graphics.FillPath(pgb, path); 

		}
	}
}