mouse wheel events

[Andrea Zagli <azagli inwind it>]

i have a widget that is a gtkbin; inside there is a gtkscrolledwindow

i want to intercept scroll-event from my widget without pass it to the  
internal gtkscrolledwindow

i set widget_class->scroll_event and GDK_BUTTON_PRESS_MASK but the  
scroll-event goes always to the gtkscrolledwindow and not first to my  
widget

what am i wrong?

thanks in advance