int ifail = ITK_ok;
ifail = EPM_register_action_handler("VAL-reject-result-overrides", "", cf_test_action);
if (ifail == 0) {
printf("Register VAL-reject-result-overrides successful
");
}else {
printf("Register VAL-reject-result-overrides failed %d
", ifail);
}
原因：有可能handler已经注册过了