public void Puase()
        {
            TemStr = "";

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

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

            mc.state = State.mPuase;
        }
        //播放

        public void play()
        {
            TemStr = "";

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

            APIClass.mciSendString("play media", TemStr, TemStr.Length, 0);

            mc.state = State.mPlaying;
        }
        //停止

        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;
        }