GTK_SCROLL_PAGE_LEFT which key?

[Hazael Maldonado Torres <gtk-development itxolutions com>]

Hi guys, I am doing some program using GTK+ 2.4 I saw that the GtkHScale 
and GtkVScale do not property manage the page-increment property when 
you press PagUp or PagDown key. It is worth to say I am using it on a 
Mac using the standard apple Keyboard. I noticed this is not the same 
with GtkSpinButton. The window has two scale widgets (one V and one H) 
and one spin button, the three share the same GtkAdjustment.

   g_signal_connect(v_slider, "move-slider", 
G_CALLBACK(my_move_slider), NULL);

I connected an extra callback to the "move-slider" signal and printed 
the value of GtkScrollType. Every time I press the PagUp key the new 
callback is called twice one with the enum value of GTK_SCROLL_PAGE_LEFT 
and one with GTK_SCROLL_PAGE_UP. The problem is that the scale modifies 
its value twice the value of page-increment.

Any advice?

Best regards.