DROP-DOWN This style indicates that the list portion of the control is normally hidden. To see the list, the user pushes a button shown beside the entry field portion, causing it to drop down from the entry field. This is the default style.
STATIC-LIST This style causes the list to be permanently displayed on the screen.
DROP-LIST This style is similar to the DROP-DOWN style, except that the entry field is replaced by a static display of the currently selected list item.
UNSORTED This style is the same as the LIST-BOX style of the same name.
3-D This style behaves identically to the 3-D ENTRY FIELD style of the same name.
LOWER This style converts all the text in the box to lower-case.
UPPER This style converts all the text in the box to upper-case.
NOTIFY-DBLCLICK This style causes the combo box to generate CMD-DBLCLICK events. Normally, double-clicking on an item in the combo box has no special effect. If you specify this style, double clicking on an item will generate a CMD-DBLCLICK event. This will usually terminate the current ACCEPT statement and allow your program to act on the selection immediately. You can also use an embedded EXCEPTION PROCEDURE in the Screen Section to perform immediate processing. Note that this style is generally useful only for STATIC-LIST style boxes because the other types of combo boxes close their drop-down list as soon as the user clicks on an item (effectively preventing the ability to perform a double-click). See also the TERMINATION-VALUE and EXCEPTION-VALUE properties below for related topics.
NOTIFY-SELCHANGE This style causes the combo box to generate NTF-SELCHANGE events. Normally, selecting an item in the combo box has no special effect. If you specify this style, a selection change will generate a NTF-SELCHANGE event. This allows your program to act immediately on the new selection.