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Using ACCEPT and DISPLAY Statements for Input/Output and Video Forms
11.2 Designing Video Forms with ACCEPT and DISPLAY Statement Extensions
Example 11–10 Using the CONTROL KEY IN Phrase
IDENTIFICATION DIVISION.
PROGRAM-ID. SPECIAL.
ENVIRONMENT DIVISION.
CONFIGURATION SECTION.
SPECIAL-NAMES.
SYMBOLIC CHARACTERS
CR-VAL CSI-VAL Ctrl-Z-VAL SS3-VAL TAB-VAL ESC
ARE 14 156 27 144 10 28.
DATA DIVISION.
WORKING-STORAGE SECTION.
*
* The code returned will be the same regardless of
* terminal type.
*
01 CONTROL-KEY.
02 FIRST-CHAR-CONTROL-KEY PIC X.
88 CR VALUE CR-VAL.
88 CSI VALUE CSI-VAL.
88 Ctrl-Z VALUE Ctrl-Z-VAL.
88 SS3 VALUE SS3-VAL.
88 TAB VALUE TAB-VAL.
02 REMAINING-CHAR-CONTROL-KEY PIC XXXX.
88 UP-ARROW VALUE "A".
88 DOWN-ARROW VALUE "B".
88 RIGHT-ARROW VALUE "C".
88 LEFT-ARROW VALUE "D".
88 PF1 VALUE "P".
88 PF2 VALUE "Q".
88 PF3 VALUE "R".
88 PF4 VALUE "S".
88 AUX0 VALUE "p".
88 AUX1 VALUE "q".
88 AUX2 VALUE "r".
88 AUX3 VALUE "s".
88 AUX4 VALUE "t".
88 AUX5 VALUE "u".
88 AUX6 VALUE "v".
88 AUX7 VALUE "w".
88 AUX8 VALUE "x".
88 AUX9 VALUE "y".
88 AUXMINUS VALUE "m".
88 AUXCOMMA VALUE "l".
88 AUXPERIOD VALUE "n".
88 AUXENTER VALUE "M".
PROCEDURE DIVISION.
P0.
*
* DISPLAY ESC "=" puts you in alternate keypad mode
*
DISPLAY ESC "=".
DISPLAY " " ERASE SCREEN.
P1.
DISPLAY "Press a directional arrow, PF, Return, Tab, "
LINE 3 COLUMN 4.
DISPLAY "or auxiliary keypad key (Ctrl/Z stops loop)"
LINE 4 COLUMN 4.
ACCEPT CONTROL KEY IN CONTROL-KEY AT END GO TO P2.
(continued on next page)
Using ACCEPT and DISPLAY Statements for Input/Output and Video Forms 11–25