using System;using System.Collections.Generic;using System.Text;using System.Runtime.InteropServices;namespace CalmBeltFund.Trading.CTPStock{  internal class PInvokeUtility  {    static Encoding encodingGB2312 = Encoding.GetEncoding(936);    public static string GetUnicodeString(byte[] str)    {      if (str == null)      {        return "";      }      byte[] unicodeStr = Encoding.Convert(encodingGB2312, Encoding.Unicode, str);      return Encoding.Unicode.GetString(unicodeStr).TrimEnd('\0');    }    public static T GetObjectFromIntPtr
      
       (IntPtr handler)    {      try      {        if (handler == IntPtr.Zero)        {          return default(T);        }        else        {          return (T)Marshal.PtrToStructure(handler, typeof(T));        }      }      catch (Exception ex)      {        throw ex;      }    }    public static object GetObjectFromIntPtr(Type t,IntPtr handler)    {      try      {        if (handler == IntPtr.Zero)        {          return null;        }        else        {          return Marshal.PtrToStructure(handler, t);        }      }      catch (Exception ex)      {        throw ex;      }    }  }}