I'm trying to hit-test a bunch of UserControls on a Canvas. I don't want the HitTest() to walk the whole way through the visual tree, so I'm using the FilterCallback to make sure I only hit-test the UserControl.

My problem is that the UserControl never hits, it should, but it doesn't. If I use the FilterCallback, I return that it hit nothing. If I let the HitTest run through the visual tree, it skips the UserControl.

Here's some code:

```
<Canvas x:Name="Container">
<UserControl>
   <Grid>
      <Rectangle />
   </Grid>
</UserControl>
<UserControl>
   <Grid>
      <Rectangle />
   </Grid>
</UserControl>
</Canvas>

...
VisualTreeHelper.HitTest(Container, OnFilter, OnResult, myPoint);
...

private void OnResult(DependencyObject o)
{
   //I'll get the Rectangle here, but never the userControl  
}

private void OnFilter(DependencyObject o)
{
   //I will get the UserControl here, but even when I do nothing more than continue, it will not trigger a visualHit.  But the child rectangle will.
}

```