我必须用structMHD_OptionItem类型的元素填充std::vector。这个结构有这个实现:structMHD_OptionItem{enumMHD_OPTIONoption;intptr_tvalue;void*ptr_value;};我试过这种方式:vectoriov;if(...)iov.push_back({MHD_OPTION_NOTIFY_COMPLETED,requestCompleted,NULL});if(...)iov.push_back({MHD_OPTION_CONNECTION_TIMEOUT,connectionTimeout});[....]