windows下获取dns地址

#include <QCoreApplication>#include <QProcess>#include <QDebug>#include <QRegExp>
int main(int argc, char *argv[]){    QCoreApplication a(argc, argv);
    QProcess process;    process.start("cmd", QStringList()<<"/c"<<"nslookup %COMPUTERNAME% | findstr /i address");    process.waitForStarted(3000);    process.waitForFinished(3000);    QString info = process.readAllStandardOutput().trimmed();
    QStringList infos = info.split("\r\n");
    QRegExp reg("[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}");    QString dns;    for (int i = 0; i < infos.count(); i++) {        if (reg.indexIn(infos.at(i)) != -1) {            dns = reg.cap(0);            break;        }    }
    return a.exec();}