Creates a new #GstNavigation message with type #GST_NAVIGATION_MESSAGE_MOUSE_OVER.
A #GstObject to set as source of the new message.
true if the mouse has entered a clickable area of the display. false if it over a non-clickable area.
The new #GstMessage.
Creates a new #GstNavigation message with type #GST_NAVIGATION_MESSAGE_MOUSE_OVER.