A stream of dragstart
events for a dragged element whose drag has begun.
static const EventStreamProvider<MouseEvent> dragStartEvent = const EventStreamProvider<MouseEvent>('dragstart')
© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dart.dev/stable/2.5.0/dart-html/Element/dragStartEvent-constant.html