Re: [gtk-list] gtk_signal_connect() w/key_press_event

[Tim Janik <timj gtk org>]

On Wed, 13 May 1998, Michael J. Hammel wrote:

> Using gtk_signal_connect() for a key_press_event in a GtkText widget causes
> the callback routine to be passed the widget id of the GtkText widget and
> the GdkEventKey structure.  However, there doesn't appear to be any way to
> pass in user data to this callback.  How can you pass in the user data (arg
> 4 of gtk_signal_connect()) to the callback?  I need to pass in a data
> structure of information to this callback.  Is that what the "string"
> element of the GdkEventKey structure is for?  If so, should that be an
> opaque gpointer instead of a gchar type?
> 
> If this isn't possible using gtk_signal_connect(), how can I catch keystrokes 
> in a GtkText widget and have them cause a callback to be called with my data 
> structure passed in to it?

gtk_signal_connect (GTK_OBJECT (text),
                    "key_press_event",
                    GTK_SIGNAL_FUNC (my_func),
                    my_data);
static gint
my_func (GtkWidget          *widget,
         GdkEventKey        *event,
         gpointer            func_data)
{
  GtkText *text;
  gpointer my_data = func_data;
  gboolean handled = FALSE;
  
  text = GTK_TEXT (widget);
  
  /* intercept key presses
  */
  if (event->keyval == GDK_Return)
    {
      printf ("huhu\n");
      gtk_signal_emit_stop_by_name (GTK_OBJECT (text), "key_press_event");
      handled = TRUE;
    }
  
  return handled;
}


> -- 
> Michael J. Hammel           | Simba:  "Hey, why'd you do that?"
> The Graphics Muse           | Baboon: "It doesn't matter!  Its in the past!"
> mjhammel@graphics-muse.org  |                     The Lion King
> http://www.graphics-muse.org 
> 

---
ciaoTJ