[pygtk] gtk Assitant, and pages

[Nico]

Hi,
I' m facing some troubles in usage of gtk.assistant with pygtk.

In some cases , when user enter invalid data for example, I want to stay
in the same page.

So in that case on the 'page_func' callback I return the same page
number as the input ( i.e Im' in page 1, data on page 1 is invalid, so I
return 1)
 
But when I click on next button the displayed page is blank, and if I
reclick next I go to to thesame page . ( i.e. Page 1 is displayed
correctly Then I click next ,  The page display is blank, Page Id
remains 1, If I click next again, the content of page 1 is displayed again )

Does somebody have an idea what kind of problem is ?
Or in gtk.assitant philosophy there is no way to stay in the same page ?
So I need to do all the user data verification before user click on next
button ?

Thanks for the help
Nico