///<summary>关闭后</summary>
 protected override void OnClosed(EventArgs e)
 {
     base.OnClosed(e);
     if (Closeable != null)
     {
         Closeable.Close();
     }
     Release();
     if (Oscilloscopes != IntPtr.Zero)
     {
         Dll.CloseOscilloscopes(Oscilloscopes);
     }
 }