I/O error CPF5022

ma19860119

I/O error CPF5022  什么意思啊？？？？

ma19860119

这是读显示文件时候报的错误。

我是新人，学习中，麻烦说的详细点。

huangxkst

你是不是读写dspf文件出错啊...
Message . . . . :   Cannot read record &6 from file &2 at device &4.           
Cause . . . . . :   If record &6 is not a subfile or pull-down menu, write     
  record &6 to file &2 before trying to read it or specify INZRCD keyword in   
  DDS for record &6, create the file &2 again, and read without a previous     
  write. If record &6 is a subfile control record format, ensure that         
  SFLDSPCTL keyword is in effect when the program displays the subfile. If     
  record &6 is a pull-down menu record format, perform the read to the record  
  format with the MNUBARDSP keyword to determine if a pull-down menu has been  
  selected.  A read is not allowed to a pull-down menu record format until a   
  pull-down menu has been selected.                                            
Possible choices for replying to message . . . . . . . . . . . . . . . :      
  I -- No previous data is returned in user buffer.                           
  C -- Control returned to user.