DFBResult
ILayerContext_Real::CreateWindow(
                    const DFBWindowDescription                *description,
                    CoreWindow                               **ret_window
)
{
    DFBResult ret;

    D_DEBUG_AT( DirectFB_CoreLayerContext, "ILayerContext_Real::%s()\n", __FUNCTION__ );

    D_ASSERT( description != NULL );
    D_ASSERT( ret_window != NULL );

    if (description->flags & DWDESC_PARENT) {
        CoreWindow *parent;

        ret = dfb_core_get_window( core, description->parent_id, &parent );
        if (ret)
            return ret;

        if (fusion_object_check_owner( &parent->object, Core_GetIdentity(), false )) {
             dfb_window_unref( parent );
             return DFB_ACCESSDENIED;
        }

        dfb_window_unref( parent );
    }

    if (description->flags & DWDESC_TOPLEVEL_ID) {
        CoreWindow *toplevel;

        ret = dfb_core_get_window( core, description->toplevel_id, &toplevel );
        if (ret)
            return ret;

        if (fusion_object_check_owner( &toplevel->object, Core_GetIdentity(), false )) {
             dfb_window_unref( toplevel );
             return DFB_ACCESSDENIED;
        }

        dfb_window_unref( toplevel );
    }

    return dfb_layer_context_create_window( core, obj, description, ret_window );
}
DFBResult
ILayerContext_Real::CreateWindow(
                    const DFBWindowDescription                *description,
                    CoreWindow                                *parent,
                    CoreWindow                                *toplevel,
                    CoreWindow                               **ret_window
)
{
    DFBWindowDescription description_copy;

    D_DEBUG_AT( DirectFB_CoreLayerContext, "ILayerContext_Real::%s()\n", __FUNCTION__ );

    D_ASSERT( description != NULL );
    D_ASSERT( ret_window != NULL );

    description_copy = *description;

    description_copy.parent_id   = parent   ? parent->object.id   : 0;
    description_copy.toplevel_id = toplevel ? toplevel->object.id : 0;

    return dfb_layer_context_create_window( core, obj, &description_copy, ret_window );
}