private void Input_MouseWheel(object sender, MouseEventArgs e)
{
var ipos = new Point(e.X, e.Y);
var widget = this.GetWidgetFromPosition(ipos);
if (widget != null)
{
var cpos = widget.PointToClient(ipos);
widget.OnMouseWheel(MouseEventArgs.CreateWheel((int)cpos.X, (int)cpos.Y, e.WheelDelta));
}
}