If you will make properties of interface C writable and readable in object A and
only readable in object B then objects A and B will not implement the
same interface.
Try ignore writing these properties for object B. But I don't know how
this may be done =(.
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Use this on your expose event callback.
gdk_window_begin_paint_rect(widget->window, & rect);
/* Draw something */
gdk_window_end_paint(widget->window);
And make sure that widget is double buffered (by default).
Look at gtk_widget_set_double_buffered function.
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> 2007/6/24, Andrea Zagli <[EMAIL PROTECTED]>:
> i need it because i pass obj_a/obj_b to a function that do different
> things based on object type
>
> is there a different way to make it without check the object type?
>
> > > is it a bug? or is it normal?
> >
> > Show me a single object system imp
