As a general rule, the last output operation determines which function keys
are valid. The following are exceptions to this rule:
- When an operation sends no data to the display, the validity of the
various function keys is not changed. Such operations include:
- An output operation to a subfile record
- An update to a subfile record
- An output operation to a subfile control record that only clears, deletes,
or initializes a subfile without displaying the subfile or the subfile control
record
- An output operation that displays an error message by selecting ERRMSG or
ERRMSGID can also select a CA or CF key to be valid while the error message is
displayed.
- If SFLDROP is specified for a subfile, the validity of the CA or the CF
key specified for the SFLDROP keyword is determined by the last output
operation. However, as long as the subfile is displayed, the CA or CF
key, when valid, acts only as a Drop key.
- If SFLFOLD is specified for a subfile, the validity of the CA or the CF
key specified for the SFLFOLD keyword is determined by the last output
operation. However, as long as the subfile is displayed, the CA or CF
key, when valid, acts only as a Fold key.
- If two subfiles using SFLDROP or SFLFOLD are displayed at one time, the
same function key should be specified on both the SFLDROP and SFLFOLD
keywords. If they are different, only the key specified for the most
recently displayed subfile is in effect. Pressing the function key
affects the subfile containing the cursor. If the cursor is not
positioned in a subfile, the function key affects the upper subfile.
- If two subfiles using SFLENTER are displayed at the same time, the only CA
or CF key in effect as an Enter key is the CA or CF key specified for the
SFLENTER keyword on the most recently displayed subfile. The cursor
position at the time the Enter key is pressed determines which subfile is
affected.
- Note:
- The ROLLUP and ROLLDOWN keywords function like CF keys.
(C) Copyright IBM Corporation 1992, 2006. All Rights Reserved.