Embedded Procedures

Embedded Procedures have been implemented to make programming even simpler. It is a way to attach a procedure, a paragraph, or a section to one or more controls and have them activated before the control activation, after the control activation, and when a function key is pressed.

Every Screen Section item, regardless of whether it is a group or a single control, can handle up to three different Embedded Procedures. If an Embedded Procedure is assigned to a group, it is inherited by all the groups or controls that it contains, unless they have their own embedded procedure set.

There are three kinds of Embedded Procedure:

[ BEFORE PROCEDURE IS procedure-1 [{THROUGH} procedure-2] ] {THRU }

When BEFORE PROCEDURE is declared for the control, the paragraph(s) procedure-1 (thru procedure-2) are executed when the control gets focus, just before accepting user input.

[ AFTER PROCEDURE IS procedure-3 [{THROUGH} procedure-4] ] {THRU }

When AFTER PROCEDURE is declared for the control, the paragraph(s) procedure-3 (thru procedure-4) are executed when the control looses focus or when the ACCEPT terminates, just after accepting user input.

[ EXCEPTION PROCEDURE IS procedure-5 [{THROUGH} procedure-6] ] {THRU }

When EXCEPTION PROCEDURE is declared for the control, the paragraph(s) procedure-5 (thru procedure-6) are executed each time the ACCEPT of user input is interrupted by an exception (for example when the user presses a function key).

Within Embedded Procedures, the SCREEN CONTROL special registry can be used to monitor and change the focus.