Add _gdk_device_get_axis_info

This is needed for the win32 master/slave handling code.

gdk/gdkdevice.c

@@ -1369,6 +1369,29 @@ _gdk_device_add_axis (GdkDevice   *device,
   return pos;
 }
 
+void
+_gdk_device_get_axis_info (GdkDevice   *device,
+			   guint        index_,
+			   GdkAtom      *label_atom,
+			   GdkAxisUse   *use,
+			   gdouble      *min_value,
+			   gdouble      *max_value,
+			   gdouble      *resolution)
+{
+  GdkAxisInfo *info;
+
+  g_return_if_fail (GDK_IS_DEVICE (device));
+  g_return_if_fail (index_ < device->axes->len);
+
+  info = &g_array_index (device->axes, GdkAxisInfo, index_);
+
+  *label_atom = info->label;
+  *use = info->use;
+  *min_value = info->min_value;
+  *max_value = info->max_value;
+  *resolution = info->resolution;
+}
+
 void
 _gdk_device_set_keys (GdkDevice *device,
                       guint      num_keys)

gdk/gdkdeviceprivate.h

@@ -121,6 +121,13 @@ guint _gdk_device_add_axis   (GdkDevice   *device,
                               gdouble      min_value,
                               gdouble      max_value,
                               gdouble      resolution);
+void _gdk_device_get_axis_info (GdkDevice  *device,
+				guint       index,
+				GdkAtom    *label_atom,
+				GdkAxisUse *use,
+				gdouble    *min_value,
+				gdouble    *max_value,
+				gdouble    *resolution);
 
 void _gdk_device_set_keys    (GdkDevice   *device,
                               guint        num_keys);