Returns the current value for the requested axis. This function must be called from either the #GtkGestureStylus:down, #GtkGestureStylus:motion, #GtkGestureStylus:up or #GtkGestureStylus:proximity signals.
requested device axis
return location for the axis value
#TRUE if there is a current value for the axis
Returns the current value for the requested axis. This function must be called from either the #GtkGestureStylus:down, #GtkGestureStylus:motion, #GtkGestureStylus:up or #GtkGestureStylus:proximity signals.