Returns the #GdkDeviceManager associated to @display.
Return: A #GdkDeviceManager, or %NULL. This memory is owned by GDK and must not be freed or unreferenced.
3.0
See Implementation
Returns the #GdkDeviceManager associated to @display.
Return: A #GdkDeviceManager, or %NULL. This memory is owned by GDK and must not be freed or unreferenced.