C#中用API实现MP3等音频文件的播放类

public void StopT()

{

　 TemStr = ;

　 TemStr = TemStr.PadLeft(128,Convert.ToChar( ));

　 ilong = APIClass.mciSendString(close media, TemStr, 128, 0);

　 ilong = APIClass.mciSendString(close all, TemStr, 128, 0);

　 mc.state = State.mStop ;

}

public void Puase()

{

　 TemStr = ;

　 TemS

　 ilong = APIClass.mciSendString(pause media, TemStr, TemStr.Length, 0);

　 mc.state = State.mPuase ;

}

private string GetCurrPath(string name)

{

　 if(name.Length 1) return ;

　 name = name.Trim();

　 name = name.Substring(0,name.Length-1);

　 return name;

}

//总时间

public int Duration

{

　 get

　 {

durLength = ;

durLength = durLength.PadLeft(128,Convert.ToChar( )) ;

APIClass.mciSendString(status media length, durLength, durLength.Length, 0);

durLength = durLength.Trim();

if(durLength == ) return 0;

return (int)(Convert.ToDouble(durLength) / 1000f);

　 }

}

//当前时间

public int CurrentPosition

{

　 get

　 {

durLength = ;

durLength = durLength.PadLeft(128,Convert.ToChar( )) ;

APIClass.mciSendString(status media position, durLength, durLength.Length, 0);

mc.iPos = (int)(Convert.ToDouble(durLength) / 1000f);

return mc.iPos;

　 }

}

　 }

　 public class APIClass

　 {

[DllImport(kernel32.dll, CharSet = CharSet.Auto)]

public static extern int GetShortPathName (

　 string lpszLongPath,

　 string shortFile,

　 int cchBuffer

);

[DllImport(winmm.dll, EntryPoint=mciSendString, CharSet = CharSet.Auto)]

public static extern int mciSendString (

　 string lpstrCommand,

　 string lpstrReturnString,

　 int uReturnLength,

　 int hwndCallback

);

　 }

}