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Motif and CDE 2.1 Style Guide Reference
Prefix navigation is an internal navigation technique used in a combination
text-list control in which entering a printing character immediately moves the
cursor in the associated list to the next item whose textual label begins with
When to Use
Use prefix completion in combination text-list controls for index and
RequiredWhen the user types a character in the text-entry field, move the cursor
in the associated list to the next item whose label matches the prefix, enter
the character into the text-entry field, and place the text cursor after the
character. Keep the input focus in the text-entry field.
RequiredWhen the user types a character in the text-entry field and there is no
item matching the prefix in the list, generate a warning signal.
RequiredIf focus is in a text-entry field that uses prefix navigation, and the
associated list box is not displayed, display the list box when the user types
a printing character.
RecommendedBy default, when focus is in the text field, select the cursored list item
and place its text in the text field.
RequiredWhen prefix navigation is used to move the cursor in a list, do not
automatically select the cursored item unless required to do so by the
selection model in use.
RecommendedWhen focus is in a text-entry field that uses prefix navigation, allow
Ctrl V and Ctrl ^ to move the cursor and select the next or
previous item that matches the prefix. Do not place the matching text in the
Essential Related Topics
For more information, see the Combination Text-List Control (Control
Type), List Box (Control), Prefix Completion, Text-Display Field (Control),
and Text-Entry Field (Control) reference pages.
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