Enum DragAction 

#[non_exhaustive]
#[repr(u32)]
pub enum DragAction {
    None = 0,
    Copy = 1,
    Move = 2,
    Link = 3,
}

This enum describes the action negotiated between the source of a drag (DragArea) and its target (DropArea) during a drag-and-drop operation. The source declares which actions it permits, the target picks one in its can-drop callback, and the chosen action is reported back to the source via drag-finished so that, for example, a move source can remove the original data. The same enum is used for drags that come from another application or window once native drag-and-drop is in play.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

None = 0

No action: the drag is rejected, no drop will be delivered.

Copy = 1

The data is copied to the target; the source retains it.

Move = 2

The data is moved to the target; the source should remove it once the operation completes.

Link = 3

A link to the source data is created at the target; neither side gives up ownership.

Trait Implementations

impl Clone for DragAction

fn clone(&self) -> DragAction

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for DragAction

impl Debug for DragAction

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

Formats the value using the given formatter.

impl Default for DragAction

fn default() -> Self

Returns the “default value” for a type.

impl Display for DragAction

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

Formats the value using the given formatter.

impl Eq for DragAction

impl FromStr for DragAction

type Err = ParseError

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<DragAction, <Self as FromStr>::Err>

Parses a string s to return a value of this type.

impl Hash for DragAction

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for DragAction

fn eq(&self, other: &DragAction) -> 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 StructuralPartialEq for DragAction

impl TryFrom<&str> for DragAction

type Error = ParseError

The type returned in the event of a conversion error.

fn try_from(s: &str) -> Result<DragAction, <Self as TryFrom<&str>>::Error>

Performs the conversion.