mciSendString()实现循环播放音乐代码,Asp.Net代码库,德仔网

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【Asp.Net】 mciSendString()实现循环播放音乐

作者:Dezai.CN / 发布于2012/10/25/ 715

实现循环播放音乐

<div>using System;</div>
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<div>using System.Runtime.InteropServices;</div>
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<div>using System.Text;</div>
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<div>using System.Windows.Forms;</div>
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<div>namespace PlayMp3WithWindow</div>
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<div>{</div>
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<div>  public partial class Form1 : Form</div>
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<div>  {</div>
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<div>    public const int MM_MCINOTIFY = 0x3B9; //这是声明 播完音乐 mciSendString（）向系统发送的指令</div>
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<div>    [DllImport("winmm.dll")]</div>
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<div>    private static extern long mciSendString(string command,</div>
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<div>                          StringBuilder returnString,</div>
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<div>                          int returnSize,</div>
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<div>                          IntPtr hwndCallback);</div>
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<div>    public Form1()</div>
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<div>    {</div>
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<div>      InitializeComponent();</div>
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<div>      PlaySong(@"123.mp3"); // when complete callback to DefWndProc</div>
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<div>                       //歌曲路径，开始就播放这个  </div>
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<div>    }
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<div>    protected override void DefWndProc(ref Message m)</div>
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<div>    {</div>
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<div>      base.DefWndProc(ref m);      </div>
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<div>    if (m.Msg == MM_MCINOTIFY) //判断指令是不是MM_MCINOTIFY</div>
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<div>             //当歌曲播完 mciSendString（）向系统发送的MM_MCINOTIFY指令</div>
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<div>      {</div>
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<div>        PlaySong(@"456.mp3");//播完就自动播放这个。。。</div>
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<div>      }
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<div>    }
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<div>    public void PlaySong(string file)</div>
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<div>    {</div>
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<div>      mciSendString("close media", null, 0, IntPtr.Zero);//关闭</div>
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<div>      mciSendString("open \"" + file + "\" type mpegvideo alias media", null, 0, IntPtr.Zero);</div>
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<div>//打开 file 这个路径的歌曲 " ，type mpegvideo是文件类型 ，  alias 是将文件别名为media</div>
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<div>      mciSendString("play media notify", null, 0, this.Handle);//播放</div>
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<div>    }
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<div>  }
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<div>}

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　循环播放音乐　

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