- static const int INVALID_INDEX; ///< -1 is not a valid property index
- static const int INVALID_KEY; ///< -1 is not a valid property key
- static const int INVALID_COMPONENT_INDEX; ///< -1 is not a valid property index
+ static const int32_t INVALID_INDEX; ///< -1 is not a valid property index
+ static const int32_t INVALID_KEY; ///< -1 is not a valid property key
+ static const int32_t INVALID_COMPONENT_INDEX; ///< -1 is not a valid property index