8.19Qt作业
运用属性版本和静态成员函数实现 消息对话框
主要函数
#include "widget.h"
#include "ui_widget.h"Widget::Widget(QWidget *parent): QWidget(parent), ui(new Ui::Widget)
{ui->setupUi(this);this->setWindowFlag(Qt::FramelessWindowHint);this->setAttribute(Qt::WA_TranslucentBackground);connect(this,&Widget::my_sig1,this,&Widget::succ);connect(this,&Widget::my_sig2,this,&Widget::fail);
}Widget::~Widget()
{delete ui;
}
void Widget::on_push1_clicked()//判断是否登陆成功
{QString a="123456";QString b="123456";if(ui->lineEdit->text()==a&&ui->lineEdit_2->text()==b){qDebug() << "登录成功";emit my_sig1();}else {qDebug() << "登录失败";emit my_sig2();}}
void Widget::succ()//成功登录再判断
{QMessageBox ms(QMessageBox::Information,"登录页面","登录成功，是否继续",QMessageBox::Yes | QMessageBox::No,this);int re=ms.exec();if(re==QMessageBox::Yes){emit my_sig();qDebug() << "进入第二界面";this->close();}else{qDebug() << "用户主动退出";this->close();}
}
void Widget::fail()//登录失败再判断
{QMessageBox ms(QMessageBox::Warning,"登录页面","登录失败，用户不存在或密码错误，是否重新登录",QMessageBox::Yes | QMessageBox::No,this);int re=ms.exec();if(re==QMessageBox::Yes){qDebug() << "用户重新登录";ui->lineEdit->clear();ui->lineEdit_2->clear();}else{qDebug() << "用户主动退出";this->close();}
}void Widget::on_pushButton_3_clicked()//退出再判断
{int re=QMessageBox::warning(this,"登录页面","登录正在进行，您确认退出吗？",QMessageBox::Yes | QMessageBox::No);if(re==QMessageBox::No){qDebug() << "用户重新登录";ui->lineEdit->clear();ui->lineEdit_2->clear();}else{qDebug() << "用户主动退出";this->close();}
}实现效果
