C#中用API實(shí)現(xiàn)MP3等音頻文件的播放類

　 /// clsMci 的摘要說明。

　 ///

　 public class clsMCI

　 {

public clsMCI()

{

　 //

　 // TODO: 在此處添加構(gòu)造函數(shù)邏輯

　 //

}

//定義API函數(shù)使用的字符串變量

[MarshalAs(Unmana

private string Name = ;

[MarshalAs(UnmanagedType.ByValTStr,SizeConst=128)]

private string durLength = ;

[MarshalAs(UnmanagedType.LPTStr,SizeConst=128)]

private string TemStr =;

int ilong;

//定義播放狀態(tài)枚舉變量

public enum State

{

　 mPlaying = 1,

　 mPuase = 2,

　 mStop = 3

};

//結(jié)構(gòu)變量

public struct structMCI

{

　 public bool bMut;

　 public int iDur;

　 public int iPos;

　 public int iVol;

　 public int iBal;

　 public string iName;

　 public State state;

};

public structMCI mc =new structMCI() ;

//取得播放文件屬性

public string FileName

{

　 get

　 {

return mc.iName;

　 }

　 set

　 {

//ASCIIEncoding asc = new ASCIIEncoding();

try

{

　 TemStr =;

　 TemStr = TemStr.PadLeft(127,Convert.ToChar( ));

　 Name = Name.PadLeft(260,Convert.ToChar( )) ;

　 mc.iName = value;

　 ilong = APIClass.GetShortPathName(mc.iName,Name, Name.Length);

　 Name = GetCurrPath(Name);

　 //Name = open + Convert.ToChar(34) + Name + Convert.ToChar(34) + alias media;

　 Name = open + Convert.ToChar(34) + Name + Convert.ToChar(34) + alias media;

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

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

　 ilong = APIClass.mciSendString(set media time format milliseconds, TemStr, TemStr.Length , 0);

　 mc.state = State.mStop;

}

catch

{

　 MessageBox.Show(出錯(cuò)錯(cuò)誤!);

}

　 }

}

//播放

public void play()