Action

Description

add

Creates a list box object at runtime.

add to

Allows you to insert options into the list box at runtime.

change

Replaces all the contents (drawing statements) of an object, or the contents of all the objects in a class.

change window position

Allows you to indicate which block of lines should be displayed. Note that you cannot use change window xposition [of] for list boxes.

clear

Clears out all entries in the list box.

disable

Causes the list box to be grayed and prevents the user from moving to or selecting from the list box.

enable

Causes the list box to be drawn in normal color and allows the user to move to and/or select from the list box.

for each

Allows you to perform a set of actions for each

selected line

selected line in a multiple-selection list box. When in a for each selected line statement, the special inquiry built-in function selected line returns the line number of the currently selected line within the list box.

make helpid

Changes the help ID of the list box.

make parameter

Change parameter string associated with the list box.

read

Inserts the lines of the specified file into the list box. This has the same effect as the insert file statement except that the read statement is executed at runtime.

remove

Removes one or more lines from a list box.

select and deselect

Selects or deselects a given line, a selected line appears in reverse video. If the list box is a single-selection list box, the previously selected line is deselected when a selection is made.