[QT]QT教程之实例分析[八]获取IP (QHostInfo)

#include <QApplication>
#include <QHostInfo>
#include <QNetworkInterface>
#include <QMessageBox>
#include <QLineEdit>
#include <QDialog>
#include <QVBoxLayout>
#include <QList>
class NetWork :public QDialog{
public :
NetWork();
};
NetWork::NetWork(){
QString info=QHostInfo::localHostName();    //获取主机名
QHostInfo hostinfo=QHostInfo::fromName(info);   //通过主机名查找用户IP
QList<QHostAddress> address=hostinfo.addresses();   //获取主机的IP地址
//实例文本编辑框
QLineEdit *lineEdit=new QLineEdit;
QLineEdit *lineEdit2=new QLineEdit;
//设置文本
lineEdit->setText(info);
//转换成字符型
lineEdit2->setText(address.first().toString());
QVBoxLayout *layout=new QVBoxLayout;
layout->addWidget(lineEdit);
layout->addWidget(lineEdit2);
setLayout(layout);
}
int main (int argc,char ** argv){
QApplication app(argc,argv);
NetWork main;
main.show();
return app.exec();
}