Vista - Handling events in control templates

Take a custom control and put in the generic.xaml template an image,
something like;

<Style TargetType="{x:Type local:ClassShape}" >
....
<Image Source="collapse.gif" Canvas.Left="88" Canvas.Top="10"
Name="collapseImage" Cursor="Hand" MouseDown="Go">

and the CLR complains that

The root element <ResourceDictionary> requires a x:Class attribute in
order to support event handlers in the XAML file. Either remove the
event handler for the MouseDown event, or add a x:Class attribute to
the root element.

Now, if I add the x:Class="ClassShape", as required, I get the error
that the 'Go' handler cannot be found. The reason is that the generated
generic.xaml.cs creates a ClassShape class which inherits from the
ResourceDictionary base class and which has no link to my actual
ClassShape class (that is, the custom control).

This is weird and I have not found any solution anywhere on the net.
Nobody is putting event handlers in custom control templates? Is the
communication between a template and the underlying class supposed to
be only in one direction? I have also tried to fetch the template's
controls via the VisualTreeHelper but the Template property remains
'null' whatever I try.

In any case, I don't think what I try to achieve is exotic, so it's
even more frustrating....

Thanks a lot for any hint or direction!

Nobody seems to have an answer but I think I found a solution myself...
Seemingly it is not possible to wire an event handler in a custom
control, it's much more complicated; very confusing in fact. The answer
resides in the NumericUpDown sample of the SDK wherein you can see that
you need a lot of code and custom commands to route a user action to an
underlying control handler.

Hope this will help someone, somewhere, some day.