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测试媒体播放类的程序

2023-05-14 16:26:31
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在前面的一篇文章中(C#中用API实现MP3等音频文件的播放类)给出了使用API播放MP3等音频文件的类,但没有给出具体的测试方法,在这里给出具体的测试方法。

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

namespace MCIPlay
{
 /// <summary>
 /// Form1 的摘要说明。
 /// </summary>
 public class Form1 : System.Windows.Forms.Form
 {
  private System.ComponentModel.IContainer components;
  private System.Windows.Forms.Timer timer1;
  private System.Windows.Forms.Button Play;
  private System.Windows.Forms.Button Stop;
  private System.Windows.Forms.Button Puase;
  private System.Windows.Forms.Label PlayFileName;
  private System.Windows.Forms.Label Duration;
  private System.Windows.Forms.Label CurrentPosition;
  private System.Windows.Forms.OpenFileDialog openFileDialog1;
  private System.Windows.Forms.Button BrowserFile;
  clsMCI mp = new clsMCI();

  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.components = new System.ComponentModel.Container();
   this.Play = new System.Windows.Forms.Button();
   this.PlayFileName = new System.Windows.Forms.Label();
   this.Duration = new System.Windows.Forms.Label();
   this.Stop = new System.Windows.Forms.Button();
   this.Puase = new System.Windows.Forms.Button();
   this.CurrentPosition = new System.Windows.Forms.Label();
   this.timer1 = new System.Windows.Forms.Timer(this.components);
   this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
   this.BrowserFile = new System.Windows.Forms.Button();
   this.SuspendLayout();
   //
   // Play
   //
   this.Play.Location = new System.Drawing.Point(102, 243);
   this.Play.Name = "Play";
   this.Play.Size = new System.Drawing.Size(78, 24);
   this.Play.TabIndex = 0;
   this.Play.Text = "Play";
   this.Play.Click += new System.EventHandler(this.Play_Click);
   //
   // PlayFileName
   //
   this.PlayFileName.AutoSize = true;
   this.PlayFileName.Location = new System.Drawing.Point(12, 15);
   this.PlayFileName.Name = "PlayFileName";
   this.PlayFileName.Size = new System.Drawing.Size(0, 17);
   this.PlayFileName.TabIndex = 1;
   //
   // Duration
   //
   this.Duration.AutoSize = true;
   this.Duration.Location = new System.Drawing.Point(15, 51);
   this.Duration.Name = "Duration";
   this.Duration.Size = new System.Drawing.Size(0, 17);
   this.Duration.TabIndex = 2;
   //
   // Stop
   //
   this.Stop.Location = new System.Drawing.Point(282, 243);
   this.Stop.Name = "Stop";
   this.Stop.Size = new System.Drawing.Size(81, 24);
   this.Stop.TabIndex = 3;
   this.Stop.Text = "Stop";
   this.Stop.Click += new System.EventHandler(this.Stop_Click);
   //
   // Puase
   //
   this.Puase.Location = new System.Drawing.Point(198, 243);
   this.Puase.Name = "Puase";
   this.Puase.Size = new System.Drawing.Size(72, 24);
   this.Puase.TabIndex = 4;
   this.Puase.Text = "Puase";
   this.Puase.Click += new System.EventHandler(this.Puase_Click);
   //
   // CurrentPosition
   //
   this.CurrentPosition.AutoSize = true;
   this.CurrentPosition.Location = new System.Drawing.Point(15, 87);
   this.CurrentPosition.Name = "CurrentPosition";
   this.CurrentPosition.Size = new System.Drawing.Size(0, 17);
   this.CurrentPosition.TabIndex = 5;
   //
   // timer1
   //
   this.timer1.Enabled = true;
   this.timer1.Interval = 1000;
   this.timer1.Tick += new System.EventHandler(this.timer1_Tick);
   //
   // BrowserFile
   //
   this.BrowserFile.Location = new System.Drawing.Point(312, 165);
   this.BrowserFile.Name = "BrowserFile";
   this.BrowserFile.Size = new System.Drawing.Size(87, 24);
   this.BrowserFile.TabIndex = 6;
   this.BrowserFile.Text = "SelectFile";
   this.BrowserFile.Click += new System.EventHandler(this.BrowserFile_Click);
   //
   // Form1
   //
   this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
   this.ClientSize = new System.Drawing.Size(433, 287);
   this.Controls.Add(this.BrowserFile);
   this.Controls.Add(this.CurrentPosition);
   this.Controls.Add(this.Puase);
   this.Controls.Add(this.Stop);
   this.Controls.Add(this.Duration);
   this.Controls.Add(this.PlayFileName);
   this.Controls.Add(this.Play);
   this.Name = "Form1";
   this.Text = "Form1";
   this.ResumeLayout(false);

  }
  #endregion

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

  //选择MP3文件播放
  private void Play_Click(object sender, System.EventArgs e)
  {
   try
   {
    mp.play();
   }
   catch
   {
    MessageBox.Show("出错错误!");
   }
  }

  //暂停播放
  private void Puase_Click(object sender, System.EventArgs e)
  {
   try
   {
    mp.Puase();
   }
   catch
   {
    MessageBox.Show("出错错误!");
   }

  }

  //停止播放
  private void Stop_Click(object sender, System.EventArgs e)
  {
   try
   {
    mp.StopT();
   }
   catch
   {
    MessageBox.Show("出错错误!");
   }
  }

  //每秒显示一次播放进度
  private void timer1_Tick(object sender, System.EventArgs e)
  {
   CurrentPosition.Text = mp.CurrentPosition.ToString();
  }

  //浏览文件
  private void BrowserFile_Click(object sender, System.EventArgs e)
  {
   try
   {
    openFileDialog1.Filter = "*.mp3|*.mp3";
    openFileDialog1.FileName = "";
    if(openFileDialog1.ShowDialog() == DialogResult.OK)
    {
     mp.FileName = openFileDialog1.FileName ;
     PlayFileName.Text = openFileDialog1.FileName ;
     Duration.Text = mp.Duration.ToString() ;
    }
   }
   catch
   {
    MessageBox.Show("出错错误!");
   }
  }
 }
}

本程序在Visual Studio2003,WINXP下运行通过。

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