/// <summary>
 /// 截图.
 /// </summary>
 /// <param name="sender">The source of the event.</param>
 /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
 private void Snop_MenuItem_Click(object sender, EventArgs e)
 {
     if (channelID <= 0)
     {
         return;
     }
     int ret = PlayerSdk.EasyPlayer_PicShot(channelID);
 }