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>, ) -> bool

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 escalates past the window boundary carrying an OS-exportable payload.

fn set_scale_factor(&self, _scale: f64)

Tell the backend this window’s HiDPI scale factor.

fn cancel_drag(&self)

Cancel an in-flight outbound OS drag (the user pressed Escape).

fn run_pending_outbound_drag(&self)

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 returned true and stashed the payload — so a blocking platform drag loop (Windows OLE DoDragDrop) runs outside the dispatch that started it. When it finishes, this MUST post ExternalDragEvent::DragEnded through the captured poster. Default no-op: non-blocking backends (macOS / Wayland) start the session directly in begin_drag and never stash.