对话框)"/>
QTday03(信号与槽、对话框)
今日任务:
1.
完善对话框,点击登录对话框,如果账号和密码匹配,则弹出信息对话框,给出提示”登录成功“,提供一个Ok按钮,用户点击Ok后,关闭登录界面,跳转到新的界面中
如果账号和密码不匹配,弹出错误对话框,给出信息”账号和密码不匹配,是否重新登录“,并提供两个按钮Yes|No,用户点击Yes后,清除密码框中的内容,继续让用户进行登录,如果用户点击No按钮,则直接关闭登录界面
如果用户点击取消按钮,则弹出一个问题对话框,给出信息”您是否确定要退出登录?“,并给出两个按钮Yes|No,用户点击Yes后,关闭登录界面,用户点击No后,关闭对话框,继续执行登录功能
要求:基于属性版和基于静态成员函数版至少各用一个
要求:尽量每行代码都有注释
2.思维导图
文件目录:
代码:
page2.h:
#ifndef PAGE2_H
#define PAGE2_H#include <QWidget>
#include <QMovie>namespace Ui {
class Page2;
}class Page2 : public QWidget
{Q_OBJECTpublic:explicit Page2(QWidget *parent = nullptr);~Page2();
public slots:void login_slot();private:Ui::Page2 *ui;
};#endif // PAGE2_H
widget.h:
#ifndef WIDGET_H
#define WIDGET_H#include <QWidget>
#include <QMovie>
#include <QMessageBox>
#include <QDebug>QT_BEGIN_NAMESPACE
namespace Ui { class Widget; }
QT_END_NAMESPACEclass Widget : public QWidget
{Q_OBJECTpublic:Widget(QWidget *parent = nullptr);~Widget();public slots:void loginButton_slot();signals:void login_signal();private:Ui::Widget *ui;
};
#endif // WIDGET_H
main.cpp:
#include "widget.h"
#include "page2.h"#include <QApplication>int main(int argc, char *argv[])
{QApplication a(argc, argv);Widget w;w.show();Page2 p2;QObject::connect(&w,&Widget::login_signal,&p2,&Page2::login_slot);return a.exec();
}
page2.cpp:
#include "page2.h"
#include "ui_page2.h"Page2::Page2(QWidget *parent) :QWidget(parent),ui(new Ui::Page2)
{ui->setupUi(this);QMovie *movie = new QMovie(":/111/cai.gif");ui->label->setMovie(movie);ui->label->setScaledContents(true);movie->start();
}Page2::~Page2()
{delete ui;
}void Page2::login_slot()
{this->show();
}
widget.cpp:
#include "widget.h"
#include "ui_widget.h"Widget::Widget(QWidget *parent): QWidget(parent), ui(new Ui::Widget)
{ui->setupUi(this);this->setFixedSize(560,430);this->setStyleSheet("background-color:#faf7ec");this->setWindowFlag(Qt::FramelessWindowHint);//无边框QMovie *movie = new QMovie(":/111/cai.gif");ui->backLabel->setMovie(movie);ui->backLabel->setScaledContents(true);movie->start();ui->closeButton->setStyleSheet("border-image:url(:/111/basketball.png)");ui->avatorLabel->resize(60,60);ui->avatorLabel->setStyleSheet("border-image:url(:/111/user.png);border-radius:30px");ui->accountLabel->setPixmap(QPixmap(":/111/account.jpg"));//ui->accountLabel->resize(40,40);ui->accountLabel->setScaledContents(true);ui->passwdLabel->setPixmap(QPixmap(":/111/passwd.jpg"));//ui->passwdLabel->resize(40,40);ui->passwdLabel->setScaledContents(true);ui->accoountLine->setPlaceholderText("账号");ui->passwdLine->setPlaceholderText("密码");ui->passwdLine->setEchoMode(QLineEdit::Password);ui->loginLabel->setPixmap(QPixmap(":/111/2.png"));ui->loginLabel->setScaledContents(true);ui->loginButton->setStyleSheet("background-color:#409EFF;border-radius:5px");connect(ui->closeButton,SIGNAL(clicked()),this,SLOT(close()));connect(ui->loginButton,&QPushButton::clicked,this,&Widget::loginButton_slot);}Widget::~Widget()
{delete ui;
}void Widget::loginButton_slot()
{if(ui->accoountLine->text()=="admin"&&ui->passwdLine->text()=="123456"){qDebug() << "登录成功" <<endl;QMessageBox::information(this,"提示","登录成功",QMessageBox::Ok);this->close();//开启新窗口emit login_signal();}else{qDebug() << "账号或者密码错误" <<endl;int res=QMessageBox::information(this,"提示","账号或者密码错误,是否继续登录",QMessageBox::Ok|QMessageBox::No);if(res==QMessageBox::Ok){ui->passwdLine->setText("");}else{this->close();}}
}
运行结果:
今日思维导图:
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QTday03(信号与槽、对话框)
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