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。
新闻热点
疑难解答