[Paraview] Using the accept button from a pqObjectPanel

[Paul Edwards]

My pqObjectPanel has a dialog which provides an editor for my filter.
I would like to apply or reset changes from my dialog (or
pqObjectPanel) but (I think) this requires a call to
"pqObjectInspectorWidget::accept" or "pqObjectInspectorWidget::reset".
 I cannot work out how to get a pointer to pqObjectInspector from my
pqObjectPanel.

Can any help (or suggest another way)?

Thanks,
Paul