Re: How to determine the type of a widget?

["Marc K." <marc centrin net id>]

On Sunday 28 November 2004 01:26, you wrote:
> Hi,
>
> "Marc K." <marc centrin net id> writes:
> > Question: how can I determine the type of a widget
> > when all I know is that it is a GtkWidget? i.e. it may
> > be a GtkButton, GtkFrame, etc.
> >
> > I tried to dig into the manual for an easy solution but
> > I cant seem to find any. Or maybe I miss something?
>
> You should make yourself familiar with GObject. You are probably
> looking for G_TYPE_FROM_INSTANCE().

What I want to achieve is to collect some IDs (or something similar)
when I create the internal classes. At this point, I have not created
any instances. So I think I cant use G_TYPE_FROM_INSTANCE.

Class *ButtonClass = ClassNew ("Button", BinClass, ....
klass = get_the_class_of (GtkButton)
id = the_id_of_class (klass)
set_class_id (ButtonClass, id)
...
then later (stupid code but i hope it makes the point)
....
id = get_id_of_this_widget_instance (w)
Class c = get_class_from_id (id)
if (c == ButtonClass)
   ...
else if (c == FrameClass)
   ...
etc.

marc