///<summary>改变基线偏移值</summary>
 ///<param name="lineWidth">基线偏移值</param>
 public void ChangeOffset(int offset)
 {
     if (m_Oscilloscope != IntPtr.Zero)
     {
         Dll.ChangeOffset(m_Oscilloscope, 0u, offset);
     }
 }
 ///<summary>改变基线偏移值</summary>
 ///<param name="index">图形序号</param>
 ///<param name="offset">基线偏移值</param>
 public void ChangeOffset(uint index, int offset)
 {
     if (m_Oscilloscope != IntPtr.Zero)
     {
         Dll.ChangeOffset(m_Oscilloscope, index, offset);
     }
 }