private void wxMain_PreviewMouseWheel(object sender, MouseWheelEventArgs e)
{
if (Keyboard.FocusedElement != wxMain)
{
var wxobj = WPF.FindFirstParent <ScrollViewer>(sender as UIElement);
if (wxobj != null)
{
e.Handled = true;
var e2 = new MouseWheelEventArgs(e.MouseDevice, e.Timestamp, e.Delta);
e2.RoutedEvent = MouseWheelEvent;
wxobj.RaiseEvent(e2);
}
}
}