Re: [gtk-list] getting netry key-presses

[Brandon Long <blong fiction net>]

On 09/23/98 Robin Ericsson uttered the following other thing:
>   I know there was a thread about this about a month ago but never got to
> really understand that.
> 
>   What I want is to get the keys "up" and "down". Should I then use connect to
> key_press_event and wait for right widget and keys? And who do I check for
> those keys?

Basically, you have to grab key_press_event:

static GList *EntryHistory = NULL;

gtk_signal_connect (GTK_OBJECT (entry), "key_press_event",
    (GtkSignalFunc) entry_key_press, NULL);

Then, you can handle it like:
int visual_entry_key_press (GtkEntry * entry, GdkEventKey * event, void *data)
{
  GList *li;

  if (event->state & GDK_CONTROL_MASK)
  {
    switch (event->keyval)
    {
      case 'C':
      case 'c':
	if (event->state & GDK_CONTROL_MASK)
	{
	  send_break ();
	  return TRUE;
	}
	break;
    }
  }
  else
  {
    switch (event->keyval)
    {
      case GDK_Up:
      case GDK_KP_Up:
	li = visual_entry_find
	  (gtk_entry_get_text (GTK_ENTRY (entry)));
	if (li)
	  li = li->prev;
	if (li)
	  gtk_entry_set_text (GTK_ENTRY(entry), (gchar *) li->data);
	gtk_signal_emit_stop_by_name (GTK_OBJECT (entry), "key_press_event");
	return TRUE;
	break;
      case GDK_Down:
      case GDK_KP_Down:
	li = visual_entry_find (gtk_entry_get_text (GTK_ENTRY (entry)));
	if (li)
	  li = li->next;
	if (li)
	  gtk_entry_set_text (GTK_ENTRY(entry), (gchar *) li->data);
	gtk_signal_emit_stop_by_name (GTK_OBJECT (entry), "key_press_event");
	return TRUE;
	break;
    }
  }
  return FALSE;
}

GList * visual_entry_find (gchar *text)
{
  GList *list;

  list = EntryHistory;

  while (list && list->data)
  {
    if (!strcmp ((char *)list->data, text))
      return list;
    list = list->next;
  }
  return NULL;
}

Basically, if your handler finishes handling of the keypress event, then
you emit the stop signal and return true, else return false.

Brandon
-- 
 Brandon Long           "For some reason, the act of talking to Absolute  
 MD6 Crash Test Dummy     Evil makes chocolate syrup drip from your pineal
 blong@fiction.net            Gland."  -- LeTeXan, "Today's Suck"   6/3/97
       I'm too low on the totem pole to speak for Intel.
                 http://www.fiction.net/blong/