QT-day2

完善登录框

点击登录按钮后，判断账号（admin）和密码（123456）是否一致，如果匹配失败，则弹出错误对话框，文本内容“账号密码不匹配，是否重新登录”，给定两个按钮ok和cancel，点击ok后，会清除密码框中的内容，继续进行登录；如果点击cancel按钮，则关闭界面。

如果账号和密码匹配，则弹出信息对话框，给出提示信息为“登录成功”,给出一个按钮ok，点击ok后，关闭整个登录界面，跳转到其他界面

点击取消按钮后，弹出问题对话框，询问是否确定要退出登录，给出两个按钮，yes|no,点击yes，则直接关闭整个登录界面，如果点击no则进行进行登录

要求：消息对话框，对象版和静态成员函数版至少各实现一个

加载资源文件

mywnd.h

#ifndef MYWND_H
#define MYWND_H#include <QWidget>
#include <QMessageBox>
#include <QPushButton>
#include <QLineEdit>
#include <QLabel>
#include <QDebug>class MyWnd : public QWidget
{Q_OBJECTsignals:void my_signal();void  jumpsignal();public:MyWnd(QWidget *parent = nullptr);~MyWnd();private slots:void  loginbton1_clicked();void  cancelbton2_clicked();private:QPushButton *bton1;QPushButton *bton2;QLineEdit *edit1;QLineEdit *edit2;QLabel *lab1;QLabel *lab2;QLabel *lab3;};
#endif // MYWND_H

second.h

#ifndef SECOND_H
#define SECOND_H#include <QWidget>namespace Ui {
class Second;
}class Second : public QWidget
{Q_OBJECTpublic:void  jump_slot();public:explicit Second(QWidget *parent = nullptr);~Second();private:Ui::Second *ui;
};#endif // SECOND_H

main.cpp

#include "mywnd.h"
#include "second.h"
#include <QApplication>int main(int argc, char *argv[])
{QApplication a(argc, argv);MyWnd w;w.show();Second s;QObject::connect(&w,&MyWnd::jumpsignal,&s,&Second::jump_slot);return a.exec();
}

mywnd.cpp

#include "mywnd.h"
#include <iostream>
#include <QDebug>
#include <QPushButton>
#include <QLineEdit>
#include <QLabel>MyWnd::MyWnd(QWidget *parent): QWidget(parent)
{this->setFixedSize(400,350);this->setWindowTitle("Widget");this->setWindowIcon(QIcon(":/icon/wodepeizhenshi.png"));QLabel *lab1 = new QLabel(this);lab1->resize(400,150);lab1->setPixmap(QPixmap(":/icon/logo.png"));lab1->setScaledContents(true);QLabel *lab2 = new QLabel(this);lab2->resize(60,55);lab2->move(75,160);lab2->setPixmap(QPixmap(":/icon/userName.jpg"));lab2->setScaledContents(true);QLabel *lab3 = new QLabel(this);lab3->resize(60,55);lab3->move(lab2->x(),lab2->y()+65);lab3->setPixmap(QPixmap(":/icon/passwd.jpg"));lab3->setScaledContents(true);QLineEdit *edit1 = new QLineEdit("admin",this);edit1->resize(200,55);edit1->move(lab2->x()+65,lab2->y());QLineEdit *edit2 = new QLineEdit("123456",this);edit2->resize(200,55);edit2->move(lab3->x()+65,lab3->y());edit2->setEchoMode(QLineEdit::Password);QPushButton *bton1 = new QPushButton(QIcon(":/icon/login.png"),"登录",this);bton1->resize(90,55);bton1->move(edit2->x()+20,edit2->y()+65);QPushButton *bton2 = new QPushButton(QIcon(":/icon/cancel.png"),"取消",this);bton2->resize(90,55);bton2->move(bton1->x()+105,bton1->y());connect(bton1,&QPushButton::clicked,this,&MyWnd::loginbton1_clicked);connect(bton2,&QPushButton::clicked,this,&MyWnd::cancelbton2_clicked);}void  MyWnd::loginbton1_clicked()
{if(edit1->text()=="admin"&&edit2->text()=="123456"){QMessageBox sucbox(QMessageBox::Information,"登录","登录成功",QMessageBox::Ok,this);int ret = sucbox.exec();if(ret == QMessageBox::Ok){this->close();emit jumpsignal();}}else{QMessageBox errbox(QMessageBox::NoIcon,"登录","账号密码不匹配，是否重新登录",QMessageBox::Ok|QMessageBox::Cancel,this);int ret = errbox.exec();if(ret == QMessageBox::Ok){edit2->clear();}else if(ret == QMessageBox::Cancel){this->close();}}
}void MyWnd::cancelbton2_clicked()
{int ret = QMessageBox::question(this,"取消","是否确定要退出登录",QMessageBox::Yes|QMessageBox::No,QMessageBox::Yes);if(ret == QMessageBox::Yes){this->close();}
}MyWnd::~MyWnd()
{
}

second.cpp

#include "second.h"
#include "ui_second.h"Second::Second(QWidget *parent) :QWidget(parent),ui(new Ui::Second)
{ui->setupUi(this);
}Second::~Second()
{delete ui;
}
void Second::jump_slot()
{this->show();
}

测试结果