ROWBOUND action attribute
The ROWBOUND attribute defines if the action is related to the row
context of a record list.
Syntax
(only in action handlers of record list dialog)
ROWBOUNDUsage
The ROWBOUND attribute is to be used in a DISPLAY ARRAY or
INPUT ARRAY dialog action handler, when the action depends on the row context.
Actions marked with this attribute will be automatically enabled/disabled, based on current row
existence, and will be rendered in a way depending on the front-end platform.
ROWBOUND attribute is to have
the corresponding action enabled and disabled automatically by the runtime system, depending on the
existence of a row. The default decoration of such action is front-end platform driven and is the
consequence of using the ROWBOUND action attribute. A DISPLAY
ARRAY or INPUT ARRAY can be used with a plain form that show a single row
at a time. The rowbound actions can also be used in such case, using form buttons as action views
for example. These buttons will be automatically enabled/disabled according to the list
content.If a default action view is displayed for the action, it is automatically hidden when no current
row context is available. The defaut action view can however be forced with DEFAULTVIEW=YES.
The ROWBOUND attribute can only be specified in a list handling dialog
(INPUT ARRAY or DISPLAY ARRAY), as action attribute in the
ATTRIBUTES() clause of ON ACTION handlers, and applies to the
actions defined by the current dialog in the current window.
Automatic update and delete actions of INPUT
ARRAY, as well as actions created by ON UPDATE and ON
DELETE modification trigger in DISPLAY ARRAY, are implicitly rowbound
actions. Such actions must be available only when at least one row exists in the list. Therefore,
the ROWBOUND attribute cannot be specified in DISPLAY ARRAY
modification triggers.
Example
DISPLAY ARRAY ...
...
ON ACTION print ATTRIBUTES(ROWBOUND)
CALL print_customer_info(arr_curr())
...