Enum ChoiceKind 

pub enum ChoiceKind {
    ComboBox,
    EditableCombo,
    ListBox,
    MultiSelectListBox,
}

Sub-kind of a choice (/Ch) field, derived from its flags word.

AcroForm models combo boxes and list boxes as the same field type; the four variants below distinguish the visual presentation and selection semantics. Use choice_kind to derive this enum from a FieldFlags value.

Variants

ComboBox

Closed-list combo box: pick one of the predefined /Opt entries. Free-text input not allowed. (Combo flag set; Edit clear.)

EditableCombo

Combo box that also accepts free-text input not in the option list. Useful for “common cities, but type your own” patterns. (Combo and Edit both set.)

ListBox

Single-selection list box; one option visible-and-selected at a time, others scroll. (Combo clear; MultiSelect clear.)

MultiSelectListBox

List box allowing multiple options to be selected simultaneously (Ctrl/Cmd-click). The field’s value is then a name array rather than a single name. (MultiSelect flag set.)

Trait Implementations

impl Clone for ChoiceKind

fn clone(&self) -> ChoiceKind

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ChoiceKind

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for ChoiceKind

fn eq(&self, other: &ChoiceKind) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for ChoiceKind

impl Eq for ChoiceKind

impl StructuralPartialEq for ChoiceKind