NAME
Drop-Down List (Control) — Reference
Description
A drop-down list is a combination text-list control in which
the text field is a text-display field that is always visible, but
the list box is hidden until the user performs an action to display
it.
When to Use
- Recommended
Use a drop-down list instead of a list box when
the selected item is not changed frequently or when space is so
limited that the window does not have enough space to display a
list box.
Guidelines
- Recommended
Display an initial value from the list box in the
text-display field.
- 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-display field.
Behavior
- Required
Do not allow the list box in a drop-down list to
take focus.
Essential Related Topics
For more information, see the Combination Box (Control),
Combination
Text-List Control (Control Type),
Control, Drop-Down Combination Box (Control),
First-Letter
Cursor Navigation, and List Box (Control)
reference pages.
Supplemental Related Topics
For more information, see the Keyboard (Device),
Mouse (Device), and
Scroll Bar (Control)
reference pages.
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