form1.cs

Csharp实例编程百例.rar

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

namespace CAllAPIApp
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.TextBox textBox1;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.TextBox textBox2;
		/// <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.button1 = new System.Windows.Forms.Button();
			this.textBox1 = new System.Windows.Forms.TextBox();
			this.label1 = new System.Windows.Forms.Label();
			this.label2 = new System.Windows.Forms.Label();
			this.textBox2 = new System.Windows.Forms.TextBox();
			this.SuspendLayout();
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(24, 185);
			this.button1.Name = "button1";
			this.button1.Size = new System.Drawing.Size(248, 32);
			this.button1.TabIndex = 0;
			this.button1.Text = "PC扬声器发声";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// textBox1
			// 
			this.textBox1.Location = new System.Drawing.Point(128, 40);
			this.textBox1.Name = "textBox1";
			this.textBox1.Size = new System.Drawing.Size(136, 21);
			this.textBox1.TabIndex = 1;
			this.textBox1.Text = "1000";
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(24, 40);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(96, 16);
			this.label1.TabIndex = 2;
			this.label1.Text = "时间（ms）：";
			// 
			// label2
			// 
			this.label2.Location = new System.Drawing.Point(26, 88);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(72, 16);
			this.label2.TabIndex = 4;
			this.label2.Text = "频率（Hz)：";
			// 
			// textBox2
			// 
			this.textBox2.Location = new System.Drawing.Point(127, 87);
			this.textBox2.Name = "textBox2";
			this.textBox2.Size = new System.Drawing.Size(136, 21);
			this.textBox2.TabIndex = 3;
			this.textBox2.Text = "5000";
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(292, 261);
			this.Controls.AddRange(new System.Windows.Forms.Control[] {
																		  this.label2,
																		  this.textBox2,
																		  this.label1,
																		  this.textBox1,
																		  this.button1});
			this.Name = "Form1";
			this.Text = "CallAPI";
			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());
		}
		#region DllImport

		
		[DllImport("user32.dll")]    
		//动态窗口显示
		public  static  extern  bool  AnimateWindow( IntPtr  hwnd,int  dwTime,int  dwFlags);    

		[DllImport("user32.dll",  EntryPoint="MessageBox")]    
		//MessageBox
		public  static  extern  int  MsgBox(IntPtr  hWnd,  String  text,  String  caption,  uint  type);    

		[DllImport("kernel32.dll")]  
		//PC扬声器发声
		private  static  extern  int  Beep(int  dwFreq  ,int  dwDuration)  ;  
		
		#endregion

		private void Form1_Load(object sender, System.EventArgs e)
		{
			try
			{
				AnimateWindow(this.Handle, 1000,  0x00040000);	
			}
			catch(Exception ex)
			{
				MsgBox(this.Handle, ex.ToString (), "错误",0);
			}

		}

		private void button1_Click(object sender, System.EventArgs e)
		{
			MsgBox(this.Handle, "扬声器发声！", "提示", 0);
			try
			{
				Beep(Int16.Parse (textBox2.Text), Int16.Parse (textBox1.Text ));
			}
			catch(Exception ex)
			{
				MsgBox(this.Handle, ex.ToString (), "错误",0);
			}
		}
	}
}