C#实现wmp播放歌曲淡入淡出

显示全部楼层 · 2014-5-6 23:12:48

想要实现淡入淡出功能，有个listview里有歌曲和需要淡入淡出，切入切出的时间。然后实现淡入淡出，还有切入切出，一开始播放就播放歌曲的副歌部分，副歌放完立即停止播放。
private void timer1_Tick(object sender, EventArgs e)
      {
         string t = DateTime.Now.ToLongTimeString().ToString();
         this.textBox1.Text = t.ToString();
         for (int i = 0; i < listView1.Items.Count; i++)

            if (this.textBox1.Text == this.listView1.Items.SubItems[1].Text)
            {

                  axWindowsMediaPlayer1.URL = listView1.Items.SubItems[3].Text;

                  axWindowsMediaPlayer1.Ctlcontrols.play();

               //  this.timer1.Enabled = false;
                  timer2.Enabled = true;

               }
      }

      }
//下面想实现淡入淡出，根本不行啊
      private void timer2_Tick_1(object sender, EventArgs e)
      {
         for (int x = 0; x < listView1.Items.Count; x++)
         if (axWindowsMediaPlayer1.playState == WMPLib.WMPPlayState.wmppsPlaying)
         {
            if (axWindowsMediaPlayer1.settings.volume > 70)

                  axWindowsMediaPlayer1.settings.volume = axWindowsMediaPlayer1.settings.volume - 1;

            if (axWindowsMediaPlayer1.settings.volume < 0)

                  axWindowsMediaPlayer1.settings.volume = axWindowsMediaPlayer1.settings.volume + 1;

               timer2.Enabled =false ;

         }
      }
//下面想实现切入
      private void timer3_Tick(object sender, EventArgs e)
      {
         for (int y= 0; y< listView1.Items.Count; y++)
               if (listView1.Items[y].SubItems[4].Text != null)
               if (axWindowsMediaPlayer1.playState == WMPLib.WMPPlayState.wmppsPlaying)
                  {

                     axWindowsMediaPlayer1.Ctlcontrols.currentPosition = Convert.ToDouble(listView1.Items[y].SubItems[4].Text);
                     timer3.Enabled = false;
                     timer4.Enabled = true;
                  }
      }

      private double ToDouble(string p)
      {
         throw new NotImplementedException();
      }
//下面想实现切出
      private void timer4_Tick(object sender, EventArgs e)
      {
         for (int z = 0; z < listView1.Items.Count; z++)
               if (listView1.Items[z].SubItems[5].Text != null)
                  if (axWindowsMediaPlayer1.Ctlcontrols.currentPosition ==Convert .ToDouble ( listView1.Items[z].SubItems[5].Text))
                  {
                     axWindowsMediaPlayer1.Ctlcontrols.stop();
                     timer4.Enabled = false;

                  }