gtkspinbutton key press handler

[varun_shrivastava <shrivastavavarun yahoo co in>]

hi

Actually i was trying to modify the code of gtkspinbutton so that if i press
up and down arrow keys it should change focus between other gtkspinbuttons
(i don't want to use tab key). By default it increments or decrements the
value.

What i found that arrow keys have been binded to "change_value" signal. So
when arrow key press is there "change_value" function handler is being
called and behaves accordingly.
And also i found that there is no key_press_event handler defined in
class_init() function.

so inorder to have the behavior i want, i provided a keypress handler which
looks like 

static gint
gtk_spin_button_key_press (GtkWidget   *widget,
                 GdkEventKey *event)
{
     gboolean retval;
    switch(event->keyval)
     {
            case GDK_Up:
                retval = FALSE;
              break;
          case GDK_Down:
               retval = FALSE;
              break;
           case GDK_Right:
              gtk_spin_button_real_change_value
(GTK_SPIN_BUTTON(widget),GTK_SCROLL_STEP_UP);
               retval = TRUE;
                break;
           case GDK_Left:
             gtk_spin_button_real_change_value
(GTK_SPIN_BUTTON(widget),GTK_SCROLL_STEP_DOWN);
               retval = TRUE;
               break;
   }
   return retval;
 }
 
now it behaves as i want but whats happening is a mystery to me.
what i suppose is key_press_handler is being called instead of
change_value_handler
but how gtk decides whether to call a keypress handler or handler of the
signal binded by using gtk_binding_entry_add_signal()?

I just tried to experiment by providing a key press handler.

can any one help please

bye
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