Effect
Outputs the field f as a checkbox. The contents of the first
character of f is interpreted as the “status”:
‘ ‘ = not selected
‘X’ = selected
The user can change this as required.
Note
To prevent the user changing the contents of the checkbox,
you can use the addition … INPUT OFF . The checkbox is then nothing more than
a status display and can only be changed by programming.
In technical terms, a checkbox behaves exactly like an input field with a
length of 1 (FORMAT INPUT ).
Examples
DATA: MARKFIELD(1) TYPE C VALUE ‘X’.
…
WRITE MARKFIELD AS CHECKBOX. “checkbox selected
MARKFIELD = SPACE.
WRITE MARKFIELD AS CHECKBOX. “deselected
WRITE MARKFIELD AS CHECKBOX INPUT OFF. “deselected, protected
Index
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