cobol1.hlp (Topic list)
Important Notice
The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.
CBL_READ_SCR_CHATTRS Details (↑ Screen Routines)
 Key Summary                             Up Contents Index Back
────────────────────────────────────────────────────────────────────────────
 
  Parameters on Entry:
 
     screen-position         The screen position at which to start reading.
                             The top left corner is row 0, column 0.
                             See Notes on screen routines.
 
     string-length           The length of the string to read.
 
  Parameters on Exit:
 
     character-buffer        The characters read from the screen. This
                             data item must be at least as long as
                             specified by string-length; positions
                             in it beyond that length are unchanged.
 
     attribute-buffer        The attributes read from the screen. This
                             data item must be at least as long as
                             specified by string-length; positions
                             in it beyond that length are unchanged.
 
     string-length           If the end of the screen is reached, the
                             length read (in cells, that is, character-
                             attribute pairs) is returned in here.
                                    -♦-