Method OnMouseDrag

src/window_gui.h:700–700

* An 'object' is being dragged at the provided position, highlight the target if possible. * @param pt The point inside the window that the mouse hovers over. * @param widget The widget the mouse hovers over. */

	 * @param widget The widget the mouse hovers over.
	 */
	virtual void OnMouseDrag([[maybe_unused]] Point pt, [[maybe_unused]] WidgetID widget) {}

	/**
	 * A dragged 'object' has been released.