Свойство onMouseWheel
переопределено
Поток событий mousewheel обрабатываемых этим объектом Window.
Реализация
Stream<WheelEvent> get onMouseWheel =>
Element.mouseWheelEvent.forTarget(this);
© 2012 the Dart project authors
Licensed under the BSD 3-Clause "New" or "Revised" License.
https://api.dart.dev/stable/2.18.5/dart-html/Window/onMouseWheel.html
