Evaluates a key code (such as 301) and returns
a character string that is the predefined keyboard label for that
key (such as F1).
Note: Does not apply to SpeedScript programming.
Syntax
-
key-code
- The key code of the key whose label you want to know. A special
case of key-code is LASTKEY. See OpenEdge Development:
Programming Interfaces for a list of key codes and key labels.
Example
This
procedure reads each keystroke the user makes, leaving the procedure only
when the user presses GO. The KEYLABEL
function tests the LASTKEY pressed, and returns the label of the
key. (Remember that the value in LASTKEY is the key code of the
last key pressed.)
r-keylbl.p
DISPLAY "Press the " + KBLABEL("GO") + " key to leave procedure"
FORMAT "x(50)".
REPEAT:
READKEY.
HIDE MESSAGE.
IF LASTKEY = KEYCODE(KBLABEL("GO")) THEN RETURN.
MESSAGE "Sorry, you pressed the" KEYLABEL(LASTKEY) "key.".
END.
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Note
Some key
codes can be associated with more than one key label. The KEYLABEL
function always returns the label listed first in the ABL table
of key labels.
