HP 3000 Manuals

HP ALLBASE/4GL Developer Self-Paced Training Guide

Understanding Screen Processing Logic 

The HP ALLBASE/4GL screen processing logic controls:

   *   Information display on the screen.

   *   Data acceptance from fields on the screen.

   *   Execution of screen field functions.

   *   Movement of data to and from the screen field buffers and other
       data fields within HP ALLBASE/4GL.

   *   The sequence of screen field processing.

This section describes the three major components of the data screen
processing cycle.  These components are:

   *   Full data screen processing.

   *   Display field processing.

   *   Input field processing.

The descriptions of flow diagrams on the following pages will make it
easier for you to understand HP ALLBASE/4GL screen processing logic.

MPE/iX 5.0 Documentation