-typedef int (CEC_CDECL* CBCecLogMessageType)(void *param, const cec_log_message);
-typedef int (CEC_CDECL* CBCecKeyPressType)(void *param, const cec_keypress);
-typedef int (CEC_CDECL* CBCecCommandType)(void *param, const cec_command);
-typedef int (CEC_CDECL* CBCecConfigurationChangedType)(void *param, const libcec_configuration);
-typedef int (CEC_CDECL* CBCecAlertType)(void *param, const libcec_alert, const libcec_parameter);
+typedef int (CEC_CDECL* CBCecLogMessageType)(void *param, const cec_log_message &);
+typedef int (CEC_CDECL* CBCecKeyPressType)(void *param, const cec_keypress &);
+typedef int (CEC_CDECL* CBCecCommandType)(void *param, const cec_command &);
+typedef int (CEC_CDECL* CBCecConfigurationChangedType)(void *param, const libcec_configuration &);
+typedef int (CEC_CDECL* CBCecAlertType)(void *param, const libcec_alert, const libcec_parameter &);