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   源码介绍

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

namespace Menu
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.MainMenu mainMenu1;
		private System.Windows.Forms.MenuItem menuItem1;
		private System.Windows.Forms.MenuItem menuItem2;
		private System.Windows.Forms.MenuItem menuItem3;
		private System.Windows.Forms.PictureBox pictureBox1;
		private System.Windows.Forms.PictureBox pictureBox2;
		/// <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()
		{
			System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form1));
			this.mainMenu1 = new System.Windows.Forms.MainMenu();
			this.menuItem1 = new System.Windows.Forms.MenuItem();
			this.menuItem2 = new System.Windows.Forms.MenuItem();
			this.menuItem3 = new System.Windows.Forms.MenuItem();
			this.pictureBox1 = new System.Windows.Forms.PictureBox();
			this.pictureBox2 = new System.Windows.Forms.PictureBox();
			this.SuspendLayout();
			// 
			// mainMenu1
			// 
			this.mainMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																					  this.menuItem1});
			// 
			// menuItem1
			// 
			this.menuItem1.Index = 0;
			this.menuItem1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																					  this.menuItem2,
																					  this.menuItem3});
			this.menuItem1.Text = "自绘菜单";
			// 
			// menuItem2
			// 
			this.menuItem2.Index = 0;
			this.menuItem2.OwnerDraw = true;
			this.menuItem2.Text = "显示名车图片";
			this.menuItem2.DrawItem  = new System.Windows.Forms.DrawItemEventHandler(this.menuItem2_DrawItem);
			this.menuItem2.Click  = new System.EventHandler(this.menuItem2_Click);
			this.menuItem2.MeasureItem  = new System.Windows.Forms.MeasureItemEventHandler(this.menuItem2_MeasureItem);
			// 
			// menuItem3
			// 
			this.menuItem3.Index = 1;
			this.menuItem3.OwnerDraw = true;
			this.menuItem3.Text = "显示风光图片";
			this.menuItem3.DrawItem  = new System.Windows.Forms.DrawItemEventHandler(this.menuItem3_DrawItem);
			this.menuItem3.Click  = new System.EventHandler(this.menuItem3_Click);
			this.menuItem3.MeasureItem  = new System.Windows.Forms.MeasureItemEventHandler(this.menuItem3_MeasureItem);
			// 
			// pictureBox1
			// 
			this.pictureBox1.Image = ((System.Drawing.Image)(resources.GetObject("pictureBox1.Image")));
			this.pictureBox1.Location = new System.Drawing.Point(0, 0);
			this.pictureBox1.Name = "pictureBox1";
			this.pictureBox1.Size = new System.Drawing.Size(344, 184);
			this.pictureBox1.SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage;
			this.pictureBox1.TabIndex = 0;
			this.pictureBox1.TabStop = false;
			// 
			// pictureBox2
			// 
			this.pictureBox2.Image = ((System.Drawing.Image)(resources.GetObject("pictureBox2.Image")));
			this.pictureBox2.Location = new System.Drawing.Point(0, 0);
			this.pictureBox2.Name = "pictureBox2";
			this.pictureBox2.Size = new System.Drawing.Size(344, 184);
			this.pictureBox2.SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage;
			this.pictureBox2.TabIndex = 1;
			this.pictureBox2.TabStop = false;
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(344, 185);
			this.Controls.Add(this.pictureBox2);
			this.Controls.Add(this.pictureBox1);
			this.MaximizeBox = false;
			this.Menu = this.mainMenu1;
			this.Name = "Form1";
			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
			this.Text = "演示自绘式菜单";
			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 menuItem2_MeasureItem(object sender, System.Windows.Forms.MeasureItemEventArgs e)
		{//设置菜单项"显示名车图片"的显示区域
			e.ItemHeight=50;
			e.ItemWidth=180;
		}
		private void menuItem2_DrawItem(object sender, System.Windows.Forms.DrawItemEventArgs e)
		{//绘制第一个菜单
			Graphics g=e.Graphics;
			//判断菜单的状态
			if((e.State&DrawItemState.Selected)==DrawItemState.Selected)
			{//当菜单被先选中时
				//绘制背景填充矩形
				g.FillRectangle(new SolidBrush(Color.Red),e.Bounds.Left,e.Bounds.Top,e.Bounds.Width,e.Bounds.Height);
				//绘制菜单项标题
				String MyString = "显示名车图片";
				Font MyFont = new Font("宋体", 20,FontStyle.Bold);				
				SolidBrush MyBrush = new SolidBrush(Color.Yellow);
				float x = 10.0F;
				float y =  10.0F;
				StringFormat MyFormat = new StringFormat();
				MyFormat.FormatFlags = StringFormatFlags.NoWrap;
				e.Graphics.DrawString(MyString, MyFont, MyBrush, x, y, MyFormat);	
			}
			else
			{//当菜单未被先选中时
				//绘制背景填充矩形
				g.FillRectangle(new SolidBrush(Color.Blue),e.Bounds.Left,e.Bounds.Top,e.Bounds.Width,e.Bounds.Height);
				//绘制菜单标题
				String MyString = "显示名车图片";
				Font MyFont = new Font("宋体", 20,FontStyle.Bold);				
				SolidBrush MyBrush = new SolidBrush(Color.Yellow);
				float x = 10.0F;
				float y =  10.0F;
				StringFormat MyFormat = new StringFormat();
				MyFormat.FormatFlags = StringFormatFlags.NoWrap;
				e.Graphics.DrawString(MyString, MyFont, MyBrush, x, y, MyFormat);				
			}
		}

		private void menuItem3_DrawItem(object sender, System.Windows.Forms.DrawItemEventArgs e)
		{//绘制第二个菜单
			Graphics g=e.Graphics;
			//判断菜单的状态
			if((e.State&DrawItemState.Selected)==DrawItemState.Selected)
			{//当菜单被先选中时
				//绘制背景填充矩形
				g.FillRectangle(new SolidBrush(Color.Red),e.Bounds.Left,e.Bounds.Top,e.Bounds.Width,e.Bounds.Height);
				//绘制菜单项标题
				String MyString = "显示风光图片";
				Font MyFont = new Font("宋体", 20,FontStyle.Bold);				
				SolidBrush MyBrush = new SolidBrush(Color.Yellow);
				float x = 10.0F;
				float y =  60.0F;
				StringFormat MyFormat = new StringFormat();
				MyFormat.FormatFlags = StringFormatFlags.NoWrap;
				e.Graphics.DrawString(MyString, MyFont, MyBrush, x, y, MyFormat);	
			}
			else
			{//当菜单未被先选中时
				//绘制背景填充矩形
				g.FillRectangle(new SolidBrush(Color.Green),e.Bounds.Left,e.Bounds.Top,e.Bounds.Width,e.Bounds.Height);
				//绘制菜单标题
				String MyString = "显示风光图片";
				Font MyFont = new Font("宋体", 20,FontStyle.Bold);				
				SolidBrush MyBrush = new SolidBrush(Color.Yellow);
				float x = 10.0F;
				float y =  60.0F;
				StringFormat MyFormat = new StringFormat();
				MyFormat.FormatFlags = StringFormatFlags.NoWrap;
				e.Graphics.DrawString(MyString, MyFont, MyBrush, x, y, MyFormat);				
			}		
		}

		private void menuItem3_MeasureItem(object sender, System.Windows.Forms.MeasureItemEventArgs e)
		{//设置菜单项"显示风光图片"的显示区域
			e.ItemHeight=50;
			e.ItemWidth=180;		
		}

		private void menuItem2_Click(object sender, System.EventArgs e)
		{//响应"显示名车图片"菜单项的单击事件
			this.pictureBox1.Visible=true;
			this.pictureBox2.Visible=false;
		}
		private void menuItem3_Click(object sender, System.EventArgs e)
		{//响应"显示风光图片"菜单项的单击事件
			this.pictureBox2.Visible=true;
			this.pictureBox1.Visible=false;		
		}
	}
}