form1.cs

C#150例

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

namespace Example053_由直线_曲线和形状创建图形
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		public Form1()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			InitializeComponent();

			//
			// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
			//
		}

		/// <summary>
		/// 清理所有正在使用的资源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(292, 273);
			this.Name = "Form1";
			this.Text = "Form1";
			this.Paint += new System.Windows.Forms.PaintEventHandler(this.Form1_Paint);

		}
		#endregion

		/// <summary>
		/// 应用程序的主入口点。
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}

		private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
		{
			// Create an array of points for the curve in the second figure.
			Point[] points = {
								 new Point(40, 60),
								 new Point(50, 70),
								 new Point(30, 90)};

			GraphicsPath path = new GraphicsPath();

			path.StartFigure(); // Start the first figure.
			path.AddArc(175, 50, 50, 50, 0, -180);
			path.AddLine(100, 0, 250, 20);
			// First figure is not closed.

			path.StartFigure(); // Start the second figure.
			path.AddLine(50, 20, 5, 90);
			path.AddCurve(points, 3);
			path.AddLine(50, 150, 150, 180);
			path.CloseFigure(); // Second figure is closed.

			e.Graphics.DrawPath(new Pen(Color.FromArgb(255, 255, 0, 0), 2), path);		
		}
	}
}