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-rw-r--r--gtk/gtkrange.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/gtk/gtkrange.h b/gtk/gtkrange.h
index 02ffdad49c..9f3758ea8c 100644
--- a/gtk/gtkrange.h
+++ b/gtk/gtkrange.h
@@ -149,6 +149,8 @@ void gtk_range_set_value (GtkRange *range,
gdouble value);
gdouble gtk_range_get_value (GtkRange *range);
+gdouble _gtk_range_get_wheel_delta (GtkRange *range,
+ GdkScrollDirection direction);
#ifdef __cplusplus
}