Struct MemoryDndGuard 

pub struct MemoryDndGuard { /* private fields */ }

Guard that removes the window’s attachment record on drop, so ExternalDndHandle::detach is observable in tests via MemoryExternalDndBackend::attached_windows.

Trait Implementations

impl Drop for MemoryDndGuard

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.

impl ExternalDndGuard for MemoryDndGuard

fn begin_drag( &self, data: &OutboundDragData, _image: Option<&DragImageData>, pointer: PointerKind, ) -> OsDragStart

Start a native OS drag session (app → OS, “outbound”) for this window, exporting data and optionally drawing image as the drag cursor. Called when an in-app drag carrying an OS-exportable payload is handed to the platform (at the window boundary, or on the first pointer move for OsHandoff::Eager).

fn set_drop_accepted(&self, accepted: bool)

Revise the OS’s accept state for an inbound drag over this window from the widget tree’s verdict.

fn cancel_drag(&self)

Cancel an outbound OS drag: the user pressed Escape, or released the pointer before a pending start (OsDragStart::Pending) was confirmed.

fn set_scale_factor(&self, _scale: f64)

Tell the backend this window’s HiDPI scale factor.

fn run_pending_outbound_drag(&self, _on_start: &mut dyn FnMut(OsDragId))

Run a previously-requested blocking outbound drag for this window, synchronously. Called by ExternalDndHandle::run_pending_outbound_drag from a teksilo-app event-loop turn AFTER Self::begin_drag answered OsDragStart::Pending and stashed the payload, so a blocking platform drag loop (Windows OLE DoDragDrop) runs outside the dispatch that started it.