Ghost screen

Thu Oct 13 15:29:31 CDT 2016

    Hi Thanks for the info. However if I want to do lookups on files so as to alert the user by Hiliting/Flashing/Blinking a message on the Main screen , would this help.

Thanks  

----- Original Message -----
From: "Herald Kaffka" <Herald.Kaffka at westfraser.com>
To: tadjodha at stlucianic.org, powerh-l at lists.sowder.com
Sent: Thursday, 13 October, 2016 4:04:31 PM
Subject: RE: Ghost screen

Here’s an example, (This one is keeping accounting happy by preventing various control #’s from duplicating rather than due to a file limit, but the concepts are the same). 

Declare the screen as normal. List/define/type any passed in variables. 

po/order#’s fall out by mill-id (t-pass-mill-id), do I want a Po or order # (t-x2), return the next # to the caller in t-number (Variable Names aren’t mine, working example someone did a long time ago). 

Declare local files. Note that the only file in this one is a designer, (no find/change/browse processing in this screen, just do something the background and exit). 

Some internal procedures that do the actual “work”. 

An initialize procedure which in this case is examining the input variables and calling the correct internal procedure. 

If your processing is small, just chunk all the processing in the initialize procedure. (The initialize procedure is a good place to drive small ghosts). 

Better to have several small, tightly focused ghosts than a big “general purpose” one that’s trying to do a bunch of unrelated 

Tasks while trying to hide/autocomplete in the background. 

All the explicit lock/get/put processing is in here as this one is not doing find/preupdate/update/postupdate type flow, 

Just initialize, do it, and get out. 

If you have no need to pass information back to the caller, a simple 1 line qtp call can also work in place of a ghost screen. 

SCREEN name RECEIVING T-PASS-MILL-ID, T-X2, T-NUMBER 

TEMP T-PASS-MILL-ID CHAR*2 

TEMP T-X2 CHAR*2 

TEMP T-NUMBER ZONED*5 

FILE LAST_NUMBER_CONTROL DESIGNER 

ACCESS VIA MILL_ID USING T-PASS-MILL-ID 

PROCEDURE INTERNAL GET-NEXT-ORDER 

BEGIN 

LET T-NUMBER = 0 

WHILE T-NUMBER = 0 

BEGIN 

LOCK LAST_NUMBER_CONTROL RECORD 

GET LAST_NUMBER_CONTROL OPT 

IF ACCESSOK 

THEN BEGIN 

LET T-NUMBER = LAST_ORDER_NUMBER OF LAST_NUMBER_CONTROL + 1 

IF T-NUMBER = 99999 

THEN LET LAST_ORDER_NUMBER OF LAST_NUMBER_CONTROL = 0 

ELSE LET LAST_ORDER_NUMBER OF LAST_NUMBER_CONTROL = T-NUMBER 

PUT LAST_NUMBER_CONTROL 

END 

UNLOCK LAST_NUMBER_CONTROL 

END 

END 

PROCEDURE INTERNAL GET-NEXT-PO 

BEGIN 

LET T-NUMBER = 0 

WHILE T-NUMBER = 0 

BEGIN 

LOCK LAST_NUMBER_CONTROL RECORD 

GET LAST_NUMBER_CONTROL OPT 

IF ACCESSOK 

THEN BEGIN 

LET T-NUMBER = LAST_PO_NUMBER OF LAST_NUMBER_CONTROL + 1 

IF T-NUMBER = 99999 

THEN LET LAST_PO_NUMBER OF LAST_NUMBER_CONTROL = 0 

ELSE LET LAST_PO_NUMBER OF LAST_NUMBER_CONTROL = T-NUMBER 

PUT LAST_NUMBER_CONTROL 

END 

UNLOCK LAST_NUMBER_CONTROL 

END 

END 

PROCEDURE INITIALIZE 

BEGIN 

IF T-X2 = "OR" 

THEN DO INTERNAL GET-NEXT-ORDER 

IF T-X2 = "PO" 

THEN DO INTERNAL GET-NEXT-PO 

RETURN 

END 

BUILD 

From: powerh-l-bounces+herald.kaffka=westfraser.com at lists.sowder.com [mailto:powerh-l-bounces+herald.kaffka=westfraser.com at lists.sowder.com] On Behalf Of tadjodha at stlucianic.org 
Sent: Thursday, October 13, 2016 2:26 PM 
To: powerh-l at lists.sowder.com 
Subject: Ghost screen 

Does any one have examples of a Ghost screen as the 31 file limit has been reached. OpenVMS 8.3 PH 8.40G Index file system? 

Thanks 

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