on_drag_start

zng_wgt_input::drag_drop

Function on_drag_start 

Source 
pub fn on_drag_start(
    child: impl IntoUiNode,
    handler: Handler<DragStartArgs>,
) -> UiNode
Expand description

P Draggable widget started dragging.

To receive this event in a widget set draggable to true.

§Preview

You can preview this event using on_pre_drag_start. Otherwise the handler is only called after the widget content has a chance to stop propagation.

§Async

You can use async event handlers with this property.