form1.cs

苏金明编写的《用VB.NET和VC#.NET开发交互式CAD系统》一书的源代码

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

namespace MouseEvent
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.TextBox textBox1;
		/// <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()
		{
			this.textBox1 = new System.Windows.Forms.TextBox();
			this.SuspendLayout();
			// 
			// textBox1
			// 
			this.textBox1.Location = new System.Drawing.Point(80, 240);
			this.textBox1.Name = "textBox1";
			this.textBox1.Size = new System.Drawing.Size(248, 21);
			this.textBox1.TabIndex = 0;
			this.textBox1.Text = "textBox1";
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(416, 286);
			this.Controls.AddRange(new System.Windows.Forms.Control[] {
																		  this.textBox1});
			this.Name = "Form1";
			this.Text = "鼠标事件测试";
			this.ResumeLayout(false);

		}
		#endregion

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

		protected override void OnPaint(PaintEventArgs e)
		{
			Graphics g = e.Graphics;
			Pen pen=new Pen(Color.Blue, 3);
			g.DrawRectangle(pen, 100, 20, 200, 200);
		}

		protected override void OnMouseMove(MouseEventArgs e)
		{
			textBox1.Text = " ";
			if (InBox(e.X,e.Y ))
			{
				textBox1.Text = "当前鼠标在方框内移动。";
			}
			else
			{
				textBox1.Text = "当前鼠标在方框外移动。";
			}
		}

		protected override void OnMouseDown(MouseEventArgs e)
		{
			if (InBox(e.X,e.Y ))
			{
				textBox1.Text = " ";
				if (e.Button == MouseButtons.Left)
				{
					textBox1.Text = "当前鼠标左键在方框内按下。";
				}
				else if (e.Button == MouseButtons.Right)
				{
					textBox1.Text = "当前鼠标右键在方框内按下。";
				}
			}
		}

		private bool InBox(float x, float y)
		{
			if (x > 100 && x < 300 && y > 20 && y < 220)
			{
				return true;
			}
			else
			{
				return false;
			}
		}
	}
}