linux系统 Qt获取用户名

qt4

QString USBMainUI::getUserName()  {      QString userName = QDesktopServices::storageLocation(QDesktopServices::HomeLocation);      userName = userName.section("/", -1, -1);      return userName;  }

qt5

#include <QStandardPaths>QString getUserName(){    QString userPath = QStandardPaths::writableLocation(QStandardPaths::HomeLocation);    QString userName = userPath.section("/", -1, -1);    return userName;}