Browse Prior Art Database

Local Processing of F4 Pop-Up Window

IP.com Disclosure Number: IPCOM000102495D
Original Publication Date: 1990-Nov-01
Included in the Prior Art Database: 2005-Mar-17
Document File: 3 page(s) / 101K

Publishing Venue

IBM

Related People

Eagen, ST: AUTHOR [+2]

Abstract

An F4 pop-up window can be used by an application to present a list of valid choices that can be entered into an entry field. The user can request that this list be presented by pressing the F4 function key while the cursor is located in the associated entry field. The work station controller (WSC) can provide the support necessary to present and manage the F4 pop-up window, process selection of an item within the window, and remove the window when completed.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 52% of the total text.

Local Processing of F4 Pop-Up Window

       An F4 pop-up window can be used by an application to
present a list of valid choices that can be entered into an entry
field.  The user can request that this list be presented by pressing
the F4 function key while the cursor is located in the associated
entry field.  The work station controller (WSC) can provide the
support necessary to present and manage the F4 pop-up window, process
selection of an item within the window, and remove the window when
completed.

      Described is a method for managing and presenting an F4 pop-up
window, which is defined in Common User Access Panel Design and User
Interaction, IBM Publication SC26-4351-0, First Edition, dated
December, 1987.  An application can use an F4 pop-up window to
present a list of valid choices that can be entered into an entry
field.  The user requests that this list be presented by pressing the
F4 function key while the cursor is located in the associated entry
field.

      Fig. 1 illustrates the flow of display panel data from an
application to a non-programmable workstation (NWS) in the AS/400*
system.  The host display data manager builds a physical data stream
representation of the display panel and passes it to the work station
controller (WSC) for presentation.  The WSC controls the physical
attachment of multiple NWS devices.  Each NWS device consists of a
keyboard and display monitor and has limited processing capability.
F4 pop-up window processing can be performed locally by the WSC as
follows:
1.  An application can present a panel containing one or more entry
fields, as shown in the following illustration.  If an entry field
has an associated F4 pop-up window, the application indicates its
existence via text to the right of the entry field ("F4=list" in Fig.
2).
     When the display panel is initially presented, the WSC will
accept definition of any F4 pop-up windows associated with
panel-entry fields.  IBM 5250...