The M directive defines a multiple selection list box. When you have multiple directives in a Format string, you separate them with semi-colons ";".

The H directive allows horizontal scrolling in a list box.  When you have multiple directives in a Format string, you separate them with semi-colons ";".

When multiple items are selected, the ME directive causes a multi-select list box to place the value that has focus at the beginning of the list that it returns.

The MW directive populates the List Box with the selections of a Multi-Select List Box. The Choices argument is not used in the List Box Control Syntax. When you have multiple directives in a Format string, you separate them with semi-colons ";".

The C directive defines the multiple column structure of a multi-column list box.  When you have multiple directives in a Format string, you separate them with semi-colons ";".

The E directive defines a multiple selection list box using the standard Windows conventions for selecting multiple items.

By including the %M% directive in the definition of a list box, you convert the list box from a single-select to a multi-select control. For example, the following script allows you to select multiple cities:

The following topics are available.

One or more Multi-Select List Box objects may appear inside the Format section of a UI_DLG_BOX() function. The selections are stored in the %mw% variable.

The Tabbed List Box control displays a list box with multiple columns. The entries in the choice_array or choice_variable are separated into columns with the "|" (tab) character.