Browse Prior Art Database

Code Point Reuse Method of Allowing Graphical User Interface Characters on Word Processing

IP.com Disclosure Number: IPCOM000103786D
Original Publication Date: 1993-Jan-01
Included in the Prior Art Database: 2005-Mar-18
Document File: 1 page(s) / 75K

Publishing Venue

IBM

Related People

Kiel, HG: AUTHOR [+3]

Abstract

Whenever writing a screen of data to a non-programmable terminal containing graphical-like characters, first ensure that there are not special word processing symbols on the screen which use the same character code points. If there are, null out the special word processing symbols before writing the graphical-like characters. After the nulling is complete, then the graphical-like characters can be written.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 54% of the total text.

Code Point Reuse Method of Allowing Graphical User Interface Characters on Word Processing

      Whenever writing a screen of data to a non-programmable
terminal containing graphical-like characters, first ensure that
there are not special word processing symbols on the screen  which
use the same character code points.  If there are, null out the
special word processing symbols before writing the graphical-like
characters. After the nulling is complete, then the graphical-like
characters can be written.

      Some non-programmable terminals (NPTs) have a set of character
code points which can be displayed in one of three ways:  blanks,
word processing symbols, or graphical-like characters (can form
continuous window borders and scroll bars).  The NPT is attached to a
workstation controller (WSC) which tells the NPT which of the three
modes should be used.

      Whenever word processing symbols could be displayed and a
graphical-like window needs to be displayed (or other graphical-like
construct, for example, a scroll bar), the following sequence can
take place:
1.  The host application sends a Save data stream command.  The WSC
returns the display screen data and other information to the host for
storing.  If word processing symbols were on the screen, this fact is
included in the Save data.  The WSC will now keep track of which type
of character code points are on the screen (word processing symbols,
graphical-like symbols, or blanks).
2.  The host...