Drop-Down Combination Box (Control)

NAME

Drop-Down Combination Box (Control) — Reference

Description

A drop-down combination box is a combination text-list control in which the text field is a text-entry field that is always visible, but the list box is hidden until the user performs an action to display it. Figure 15 “Drop-Down Text-Entry Field” illustrates a drop-down text-entry field and Figure 16 “Drop-Down List” illustrates a drop-down list.

Figure 15 Drop-Down Text-Entry Field

Figure 16 Drop-Down List

When to Use

Recommended: Use a drop-down combination box when a window does not have enough space to contain a combination box.

Guidelines

Behavior

Required: If the drop-down combination box has focus and the list box is displayed, remove the list box if the user presses Cancel or Escape and leave focus in the text-entry field.
Required: Do not allow the list box in a drop-down combination box to take focus.

Essential Related Topics

For more information, see the Combination Box (Control), Combination Text-List Control (Control Type), Control, Drop-Down List (Control), and List Box (Control) reference pages.

Supplemental Related Topics

For more information, see the Emphasis (Cue) and Text-Entry Field (Control) reference pages.