MyLib
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  Introduction:

  This instrument driver provides programming support for MyLib.
  It contains functions for opening, configuring, taking measurements from, and
  closing the instrument.

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  Assumptions:

  To successfully use this module, the following conditions must be met:

  For GPIB instrument drivers:
         -  the instrument is connected to the GPIB.
         -  the GPIB address supplied to the initialize function must match the
            GPIB address of the instrument.

  For VXI instrument drivers:
         -  the instrument is installed in the VXI mainframe and you are
            using one of the following controller options:
                  Embedded controller
                  MXI
                  MXI2
                  GPIB-VXI
         -  the logical address supplied to the initialize function must
            match the logical address of the instrument.

  For RS-232 instrument drivers:
         -  the instrument is connected to the RS-232 interface.
         -  the COM port, baud rate, parity, and timeout supplied to the
            initialize function must match the settings of the instrument.

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  Error and Status Information:

  Each function in this instrument driver returns a status code that
  either indicates success or describes an error or warning condition.
  Your program should examine the status code from each call to an
  instrument driver function to determine if an error occurred.
  The general meaning of the status code is as follows:

       Value                  Meaning
       -------------------------------
       0                      Success
       Positive Values        Warnings
       Negative Values        Errors

  The description of each instrument driver function lists possible error
  codes and their meanings

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  How To Use This Document:

  Use this document as a programming reference manual.
  It describes each function in the

                                     MyLib

  instrument.  The functions appear in alphabetical order, with a description
  of the function and its C syntax, a description of each parameter, and a list
  of possible error codes.

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Function Tree Layout:

   MyLib                                  Function Name:

      Systen
         Windows Logo                             SetLogo
         Set Windows SHELL program                SetStartProgram
         Windows Shut off                         ShutWindows
      Time
         Set Windows Time and Day                 SetTime
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  MyLib

      功能函數(shù)庫，提供以下幾種功能：
      1.改變Windows開機(jī)畫面
      2.改變Windows SHELL程序
      3.關(guān)閉計(jì)算機(jī)
      4.設(shè)置系統(tǒng)時間和日期
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              The following functions are in alphabetical order.

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  SetLogo

      int SetLogo (char newfile[], int *hasoldfile);


  Parameter List

      newfile

          Variable Type       char []

          
          
          char[]類型
          
          
          Windows開機(jī)畫面圖象的文件名，該文件為一個320X400的256色BMP位圖，
          
          如果設(shè)置為空，則表示刪除設(shè)置的開機(jī)畫面，使用Windows本身的開機(jī)畫
          
          面。該參數(shù)可以包括完全的路徑，也可以是相對路徑的文件名。

      hasoldfile

          Variable Type       int (passed by reference)

          int *類型
          返回是否已經(jīng)設(shè)置過開機(jī)畫面

  Return Value

          
          返回值，int類型
          
          0——設(shè)置成功
          -1——文件不存在
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  SetStartProgram

      int SetStartProgram (char filename[], char oldprogram[]);


  Parameter List

      filename

          Variable Type       char []

          
          
          char[]類型
          
          輸入新的SHELL程序名，不能為空

      oldprogram

          Variable Type       char []

          
          
          char[]類型
          
          
          返回舊的SHELL程序名

  Return Value

          
          
          
          int 類型
          
          
          保留，始終返回0
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  SetTime

      int SetTime (int year, int month, int day, int hour, int minute, int second);

  Purpose



  Parameter List

      year

          Variable Type       int

          int 類型
          
          設(shè)置年，范圍1980~2500

      month

          Variable Type       int

          int 類型
          
          
          設(shè)置月，范圍1~12

      day

          Variable Type       int

          int 類型
          
          設(shè)置日，范圍1~31

      hour

          Variable Type       int

          int 類型
          
          
          設(shè)置小時，范圍0~23

      minute

          Variable Type       int

          int 類型
          
          設(shè)置分鐘，范圍0~59

      second

          Variable Type       int

          int 類型
          
          
          設(shè)置秒，范圍0~59

  Return Value

          int 類型
          
          
          
          返回狀態(tài)：
          
               0——設(shè)置正確
              -1——設(shè)置年月日錯誤
              -2——設(shè)置時間錯誤
              -3——時間和年月設(shè)置都錯誤
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  ShutWindows

      int ShutWindows (int shutStyle);


  Parameter List

      shutStyle

          Variable Type       int

          
          
          int 類型
          
          關(guān)機(jī)類型：
             0——關(guān)閉電源
             1——重新啟動
             2——安全退出操作系統(tǒng)

  Return Value

          
          
          int 類型
          
          
          返回關(guān)機(jī)操作狀態(tài)：
            0——操作失敗
          其它——正確關(guān)機(jī)