scrolledwindow: Add motion mask to the widget window

This is not specified specifically by the attached controllers, so let
the scrolledwindow set the mask, as motion events with no buttons pressed
are interesting to it.

https://bugzilla.gnome.org/show_bug.cgi?id=745344

diff --git a/gtk/gtkscrolledwindow.c b/gtk/gtkscrolledwindow.c
index dbc0f159da4130d47704c09e932de07ac7570e28..893a1ac517aa7f28037f27e674fcbad25d6c08ef 100644 (file)
--- a/gtk/gtkscrolledwindow.c
+++ b/gtk/gtkscrolledwindow.c
@@ -4041,7 +4041,7 @@ gtk_scrolled_window_realize (GtkWidget *widget)
   attributes.visual = gtk_widget_get_visual (widget);
   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
   attributes.event_mask = gtk_widget_get_events (widget) | GDK_EXPOSURE_MASK |
-    GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK;
+    GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK | GDK_POINTER_MOTION_MASK;
 
   window = gdk_window_new (gtk_widget_get_parent_window (widget),
                            &attributes, attributes_mask);