Interested to Buy Any Domain ? << Click Here >> for more details...
control variable in online screens
- 3 Answers
- 15199 Views
- Mind Tree, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / sundar selvaraj
A control variable is used to dynamically set attribute and
colour definitions for a field or group of fields depending
upon a program condition. For example, Consider an order
processing screen that allows you to create new contracts,
modify existing contracts and look-up paid-up contracts.
The screen used for all these functions is the same.
However, when a paid-up contract is shown to the user, you
do not expect it to be displayed in a modifiable state. So,
you protect all the fields of the map and show it
like "read only". However, for modifying an existing, non-
paid-up map, you enable certain fields. So, control
variables can be used in scenarios like this to dynamically
set the attributes of the field.
I hope this answers your query.
| Is This Answer Correct ? | 12 Yes | 0 No |
Answer / jaydip chakrabarty
A control variable is is defined with format C and can be
used to assign field attributes dynamically. It could be
assigned during the map design (element level) as well as
during the programming (statement level).
Example :
DEFINE DATA LOCAL
1 #ATT(C)
1 #A
END-DEFINE
MOVE (AD=I CD=BL) TO #ATT
INPUT #A (CV=#ATT)
| Is This Answer Correct ? | 6 Yes | 2 No |
Answer / jamil ahmad
In a layman terms, a control variable (#CV (C) does only
two but very useful functions.
1. Do you want the user to overlay the field with new value
or you want to protect the field, for example, if an Order#
is a system generated number, you would want that to be
modified
2. If the fields not protected, was it a modified?
For example, if the SSN was modified then validate it
otherwise take no actions against the field. Juts my 2 cents
| Is This Answer Correct ? | 2 Yes | 0 No |
Explain how to move cursor to a particular field when position is not known?
why do we use file-aid for seqential files?
What is the difference between escape(top or bottom) and escape immediate(top or bottom?
How converted the natural coding for adabas
Explain the difference between external subroutine and subprogram?
Explain adabas basic concepts. Like inverted list, address converter ,data storage?
If the number of parameter is more than the expected then NAT0919 error is displayed. How many parameter are allowed in a CALL and CALLNAT statement?
difference between fetch , call and callnat
what r the quality process in development
Explain how to ftp the natural program to desktop? (From mainframe to pc), is it possible?
Would like to know if have an expecific command that returns a code or something about the execution of a CALLNAT. For example ... CALLNAT 'SUBPRG' [parameter] [parameter] ... [here comes a code or command that checks if the CALLNAT was successful]
difference between read(1) and read work file once ?
COBOL 
