Re: where did button events' deviceid field go?

[Owen Taylor <otaylor redhat com>]

Skip Montanaro <skip pobox com> writes:

> I'm starting to update Tim Janik's gerd tool for gtk 1.3.x and am currently
> trying to handle changes to the event structs.  In 1.2 _GdkEventButton is
> defined as
> 
>     struct _GdkEventButton
>     {
>       GdkEventType type;
>       GdkWindow *window;
>       gint8 send_event;
>       guint32 time;
>       gdouble x;
>       gdouble y;
>       gdouble pressure;
>       gdouble xtilt;
>       gdouble ytilt;
>       guint state;
>       guint button;
>       GdkInputSource source;
>       guint32 deviceid;
>       gdouble x_root, y_root;
>     };
> 
> In 1.3.x it changed to
> 
>     struct _GdkEventButton
>     {
>       GdkEventType type;
>       GdkWindow *window;
>       gint8 send_event;
>       guint32 time;
>       gdouble x;
>       gdouble y;
>       gdouble *axes;
>       guint state;
>       guint button;
>       GdkDevice *device;
>       gdouble x_root, y_root;
>     };
> 
> The pressure, xtilt and ytilt fields got pushed into the GdkDevice struct

They are part of of the axes[] field now.

> (along with a new wheel field) and are extracted using gdk_event_get_axis().
> I can't figure out what became of the deviceid field, however.  It seems to
> have disappeared without a trace.  Any hints?

It was replaced by the GdkDevice *.

The deviceid was a way of uniquely identifying a device. That is
now done with the GdkDevice structure.

 http://www.gtk.org/~otaylor/gtk/2.0/xinput.html

Regards,
                                        Owen