话不多说,先一睹芳颜!

如果你也想达到这种效果,那咱们就开始吧!

一.登录界面设计

1.ui登录设计

可对Label标签进行居中显示.

也可以添加样式表,show出你的美.

label标签添加自定义大小的图片

二.加载界面

1.lineEdit的密码输入模式

输入的就是黑点,看不到真正的密码.

2.lineEdit按回车跳转的信号

3.密码的判断

如果密码错了,就继续输入,有三次机会,如果对了,就删除当前的界面.

4.创建加载界面

5.创建定时器来进行进度条的移动

当间隔时间一到,就会发出timeout信号,对槽函数**moveProgressBar()**进行执行!

6.定时器执行的槽函数

如果进度条的值加载到了一百,我们就跳转到主机信息的界面!
注意一定要将前面的布局删除,后面才能加新的布局.
因为我们在同一个窗口进行,所有后面的界面都是用代码来实现的.
要想显示就必须要加布局.

三.主机信息界面

1.主机信息系统文字

设置了渐变色,字体,居中,最小高度.

2.初始化按钮和布局

3.对每个按钮进行手动关联

四.实现相应槽函数功能

1.主机名

2.IPV4地址

3.IPV6地址

4.域名地址

5.网卡地址

6.网卡信息

五.完整代码

widget.h

#ifndef WIDGET_H
#define WIDGET_H#include <QWidget>
#include <QProgressBar>
#include <QLabel>
#include <QTimer>
#include <QVBoxLayout>
#include <QPushButton>
#include <QLineEdit>
#include <QHostInfo>QT_BEGIN_NAMESPACE
namespace Ui { class Widget; }
QT_END_NAMESPACEclass Widget : public QWidget
{Q_OBJECTpublic:Widget(QWidget *parent = nullptr);~Widget();private slots:void on_lineEditPwd_returnPressed();void onButtonHostName();void onButtonHostIPV4();void onButtonHostIPV6();void onButtonNameIP();void onButtonNetworkInterfaceIP();void onButtonNetworkInterfaceInfo();void nameIP(const QHostInfo &host);void moveProgressBar();private:Ui::Widget *ui;QProgressBar*progressBar;QLabel*loginLabel;QTimer*timer;QVBoxLayout *layout;QPushButton* buttonHostName;QPushButton* buttonHostIPV4;QPushButton* buttonHostIPV6;QPushButton* buttonNameIP;//域名QPushButton* buttonNetworkInterfaceIP;//网卡QPushButton* buttonNetworkInterfaceInfo;QLabel*lableName;QLineEdit*lineEdit;void initBackground();void initProgressBar();void initTimer();void initMenu();void initSignalSlots();};

widget.cpp

#include "widget.h"
#include "ui_widget.h"
#include <QStackedWidget>
#include <QMessageBox>
#include <QVBoxLayout>
#include <QLayout>
#include <QDebug>
#include <QHostInfo>
#include <QNetworkInterface>Widget::Widget(QWidget *parent): QWidget(parent), ui(new Ui::Widget)
{ui->setupUi(this);ui->lineEditPwd->setEchoMode(QLineEdit::Password);initBackground();initTimer();
}Widget::~Widget()
{delete ui;
}void Widget::initBackground()
{this->setFixedWidth(566);this->setFixedHeight(366);QPixmap pixmap(":/images/tx.png");pixmap = pixmap.scaled(ui->labelImage->width(),ui->labelImage->height(), Qt::KeepAspectRatio, Qt::SmoothTransformation); // 保持宽高比ui->labelImage->setPixmap(pixmap);
}void Widget::initProgressBar()
{progressBar=new QProgressBar;progressBar->setValue(0);progressBar->setRange(0,100);loginLabel=new QLabel("正在登录中...");loginLabel->setAlignment(Qt::AlignHCenter|Qt::AlignVCenter);QFont font;font.setBold(true);font.setFamily("微软雅黑");font.setPointSize(30);loginLabel->setFont(font);layout = new QVBoxLayout;layout->addWidget(loginLabel);layout->addWidget(progressBar);// 将布局设置为窗口的布局setLayout(layout);
}void Widget::initTimer()
{timer=new QTimer;timer->setTimerType(Qt::CoarseTimer);timer->setInterval(50);connect(timer,SIGNAL(timeout()),this,SLOT(moveProgressBar()));
}void Widget::initMenu()
{lableName=new QLabel("主机信息系统");lableName->setAlignment(Qt::AlignHCenter|Qt::AlignVCenter);QFont font;font.setBold(true);font.setFamily("微软雅黑");font.setPointSize(30);lableName->setFont(font);lableName->setMinimumHeight(100);QLinearGradient gradient(0, 0, lableName->width(), lableName->height()); // 创建线性渐变，从左上角到右下角gradient.setColorAt(0, Qt::blue); // 设置渐变起始颜色gradient.setColorAt(1, Qt::green); // 设置渐变结束颜色QPalette palette;palette.setBrush(QPalette::WindowText, QBrush(gradient)); // 将渐变设置为标签文字的画刷lableName->setPalette(palette); // 设置标签的调色板buttonHostName=new QPushButton("查看主机名");buttonHostIPV4=new QPushButton("查看IPV4地址");buttonHostIPV6=new QPushButton("查看IPV6地址");lineEdit=new QLineEdit;lineEdit->setPlaceholderText("请输入域名");buttonNameIP=new QPushButton("查看域名IP地址");buttonNetworkInterfaceIP=new QPushButton("查看网卡IP");buttonNetworkInterfaceInfo =new QPushButton("查看网卡信息");QVBoxLayout *Vlayout=new QVBoxLayout;Vlayout->addWidget(buttonHostName);Vlayout->addWidget(buttonHostIPV4);Vlayout->addWidget(buttonHostIPV6);QVBoxLayout *Vlayout2=new QVBoxLayout;Vlayout2->addWidget(lineEdit);Vlayout2->addWidget(buttonNameIP);Vlayout2->addWidget(buttonNetworkInterfaceIP);Vlayout2->addWidget(buttonNetworkInterfaceInfo);QHBoxLayout *Hlayout=new QHBoxLayout;Hlayout->addLayout(Vlayout);Hlayout->addStretch();Hlayout->addLayout(Vlayout2);QVBoxLayout *Vlayout3=new QVBoxLayout;Vlayout3->addWidget(lableName);Vlayout3->addLayout(Hlayout);setLayout(Vlayout3);initSignalSlots();
}void Widget::initSignalSlots()
{connect(buttonHostName,SIGNAL(clicked()),this,SLOT(onButtonHostName()));connect(buttonHostIPV4,SIGNAL(clicked()),this,SLOT(onButtonHostIPV4()));connect(buttonHostIPV6,SIGNAL(clicked()),this,SLOT(onButtonHostIPV6()));connect(buttonNameIP,SIGNAL(clicked()),this,SLOT(onButtonNameIP()));connect(buttonNetworkInterfaceIP,SIGNAL(clicked()),this,SLOT(onButtonNetworkInterfaceIP()));connect(buttonNetworkInterfaceInfo,SIGNAL(clicked()),this,SLOT(onButtonNetworkInterfaceInfo()));
}void Widget::on_lineEditPwd_returnPressed()
{static int count=0;if(ui->lineEditPwd->text().trimmed()=="123456"){initProgressBar();timer->start();delete ui->groupBox;}else{if(++count>3){QMessageBox::warning(this,"警告","密码输入错误过多,直接退出程序!");this->close();}else{QMessageBox::information(this,"消息","密码输入错误,请重新输入!");}}
}void Widget::onButtonHostName()
{QString hostName=QHostInfo::localHostName();QMessageBox::information(this,"主机信息","您的主机名为:"+hostName);
}void Widget::onButtonHostIPV4()
{QHostInfo info=QHostInfo::fromName(QHostInfo::localHostName());QList<QHostAddress> list=info.addresses();//返回的不是指针if(!list.isEmpty()){QString str;for(int i=0;i<list.count();i++){QHostAddress address=list[i];if(address.protocol()==QAbstractSocket::IPv4Protocol){str+=address.toString()+"\n";}}QMessageBox::information(this,"主机信息","IPV4:\n"+str);}
}void Widget::onButtonHostIPV6()
{QHostInfo info=QHostInfo::fromName(QHostInfo::localHostName());QList<QHostAddress> list=info.addresses();//返回的不是指针if(!list.isEmpty()){QString str;for(int i=0;i<list.count();i++){QHostAddress address=list[i];if(address.protocol()==QAbstractSocket::IPv6Protocol){str+=address.toString()+"\n";}}QMessageBox::information(this,"主机信息","IPV6:\n"+str);}
}void Widget::onButtonNameIP()
{QString name=lineEdit->text().trimmed();if(name=="") return;QHostInfo::lookupHost(name,this,SLOT(nameIP(QHostInfo)));
}void Widget::onButtonNetworkInterfaceIP()
{QList<QHostAddress> list=QNetworkInterface::allAddresses();if(!list.isEmpty()){QString str;for(int i=0;i<list.count();i++){QHostAddress address=list[i];if(address.protocol()==QAbstractSocket::IPv4Protocol){str+=address.toString()+"\n";}}QMessageBox::information(this,"网卡信息","网卡的IPV4:\n"+str);}
}void Widget::onButtonNetworkInterfaceInfo()
{QList<QNetworkInterface> listInterface=QNetworkInterface::allInterfaces();if(!listInterface.isEmpty()){QString str;for(int i=0;i<listInterface.count();i++){QNetworkInterface interface=listInterface[i];str+="设备名称:"+interface.humanReadableName()+"\n";str+="硬件地址:"+interface.hardwareAddress()+"\n";QList<QNetworkAddressEntry> list=interface.addressEntries();if(!list.isEmpty()){for(int i=0;i<list.count();i++){QNetworkAddressEntry address=list[i];str+="子网掩码:"+address.netmask().toString()+"\n";str+="广播地址:"+address.broadcast().toString()+"\n";str+="IP地址:"+address.ip().toString()+"\n\n";}}}QMessageBox::information(this,"网卡信息",str);}}void Widget::nameIP(const QHostInfo &host)
{QList<QHostAddress> list=host.addresses();//返回的不是指针if(!list.isEmpty()){QString str;for(int i=0;i<list.count();i++){QHostAddress address=list[i];if(address.protocol()==QAbstractSocket::IPv6Protocol){str+=address.toString()+"\n";}}QString name=lineEdit->text().trimmed();QMessageBox::information(this,"域名信息",name+"的IPV6:\n"+str);}
}void Widget::moveProgressBar()
{static int value=0;progressBar->setValue(++value);if(value==100){timer->stop();QMessageBox::StandardButton ret=QMessageBox::information(this,"提示","登录成功!",QMessageBox::Ok,QMessageBox::NoButton);if(ret==QMessageBox::Ok){progressBar->hide();loginLabel->hide();delete layout;initMenu();}}
}

六.结语

少即是多,慢即是快