1 index 2317d6e9..e1e897ed 100644
2 --- a/ivi-shell/ivi-layout-export.h
3 +++ b/ivi-shell/ivi-layout-export.h
4 @@ -56,12 +56,14 @@ extern "C" {
5 #endif /* __cplusplus */
11 #include "compositor.h"
13 #define IVI_SUCCEEDED (0)
14 #define IVI_FAILED (-1)
15 +#define IVI_INVALID_ID UINT_MAX
17 struct ivi_layout_layer;
18 struct ivi_layout_screen;