Pathmaker Programming Guide

Screen Painter Components
Using the Screen Painter
067868 Tandem Computers Incorporated 6–3
The current value of a displayed pseudofield appears when the
application screen is displayed.
One other pseudofield can be displayed on the application screen:
@ADVISORY. @ADVISORY contains the most recent advisory
message generated by the application. The Pathmaker product
automatically includes @ADVISORY on your application screen.
@ADVISORY can only be moved in the Screen Painter; it cannot be
added or deleted.
For a complete list of the Pathmaker pseudofields, see Section 9, ”Advanced
Pathmaker Programming Topics.”
Paging Information Paging information consists of:
Paging area
Pages
Virtual page
Each paging information item is discussed in the following pages.
Paging Area A paging area is the area of the application screen on which pages
are displayed. The paging area is initially the middle portion of the
screen, from the row of equal signs (=) below the screen title to the
row of equal signs above the advisory line. You can redefine the size
of the paging area by using the Screen Painter.
Each application screen can have only one paging area. Use the
paging area when you have too many items in the requester context
to display at once on a single screen. In this case, you have a logical
screen that consists of more than one page. You can use the NEXT
PAGE and PREV PAGE function keys to display the sequence of
pages that belong to this logical screen.
The portion of the screen outside the paging area does not change
when using the NEXT PAGE and PREV PAGE keys. You can use this
area to display information you would like to remain on the screen,
such as the time and date or the name of the file that you are reading.
Pages A page is a portion of the application screen consisting of screen
elements that appear when you press the NEXT PAGE or PREV
PAGE function key. The screen can include several pages, each
displaying different elements from the requester context.
Virtual Page The virtual page is a temporary, empty page following the last page
in the application screen. The virtual page exists only while you are
in the Screen Painter and only becomes a real page if you add a
screen element to it.