Re: GdkEvent --> XEvent

["Brian J. Tarricone" <bjt23 cornell edu>]

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Tristan Van Berkom wrote:
> Hi all,
>     As usual, I'm trying to do something that just wasnt' meant to be
> done :)  (otherwise when would I have any fun ?)
>
> I'm trying to write a widget that will display a netscape gecko plugin
> stream on linux, the plugin framework delivers an XEvent to the plugin
> and lets the plugin "react", essentially; I want to do this:
>
> gint
> widget_event_handler (GtkWidget *widget,
>                       GdkEvent  *event,
>                       gpointer   data)
> {
>     FunkyPointer fptr = gdk_get_some_obscure_internal_thingy ();
>     XEvent *event = fptr->walk->the->obscure->structures;
>
>     deliver_event_to_plugin (plugin, event);
> }
>
> Hmmm,
>     surly the XEvent isnt "gone" during the emission is it ?

I'm relatively sure the XEvent is indeed "lost" by the time you see it
in your event handler.  If you'll look at the various XEvent and
GdkEvent structures, however, you'll note that they're fairly similar (I
think it's safe to assume GdkEvent was originally based on XEvent).  You
can construct XEvents from GdkEvents, though there's a little work
involved, especially if you care about all event types and not just a
few particular events.

        -brian


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