sample7.cs

C#函数手册

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Drawing.Imaging;
namespace WindowsApplication2
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Panel panel1;
		/// <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 窗体设计器生成的代码
		/// <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()
		{
			this.panel1 = new System.Windows.Forms.Panel();
			this.SuspendLayout();
			// 
			// panel1
			// 
			this.panel1.Location = new System.Drawing.Point(40, 32);
			this.panel1.Name = "panel1";
			this.panel1.TabIndex = 0;
			this.panel1.Paint += new System.Windows.Forms.PaintEventHandler(this.panel1_Paint);
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(292, 273);
			this.Controls.Add(this.panel1);
			this.Name = "Form1";
			this.Text = "Form1";
			this.Load += new System.EventHandler(this.Form1_Load);
			this.ResumeLayout(false);

		}
		#endregion

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

		private void Form1_Load(object sender, System.EventArgs e)
		{
		
		}		

		private void panel1_Paint(object sender, 
			System.Windows.Forms.PaintEventArgs e)
		{
			Form f=new Form();
			Graphics newG =f.CreateGraphics();
			IntPtr hdc = newG.GetHdc();
			Metafile testMF = new Metafile("tempMeta.emf", hdc);
			Graphics metaG = Graphics.FromImage(testMF);
			metaG.DrawRectangle(new Pen(Color.Black, 8), 0, 0, 80,80);
			byte[] metaC = {(byte)'A', (byte)'b', (byte)'C', (byte)'d'};
			metaG.AddMetafileComment(metaC);
			//使用AddMetafileComment 方法用来向当前Metafile对象添加注释
			metaG.Dispose();
			testMF.Dispose();
			newG.ReleaseHdc(hdc);
			newG.Dispose();
			Metafile testMF2 = new Metafile("tempMeta.emf");
			e.Graphics.DrawImage(testMF2, new Point(0, 0));
			testMF2.Dispose();
		}		

	}
}