思维导图
作业
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,跳转到其他界面
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,用户迪纳基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
widget.cpp
cpp
#include "widget.h"
#include "ui_widget.h"
Widget::Widget(QWidget *parent)
: QWidget(parent)
, ui(new Ui::Widget)
{
//设置背景
ui->setupUi(this);
ui->lab1->setPixmap(QPixmap(":/pictrue/nxd.jpg"));
ui->lab1->setScaledContents(true);
//设置用户名和密码
ui->Namelab->setPixmap(QPixmap(":/pictrue/ls.jpg"));
ui->Namelab->setScaledContents(true);
ui->NamelineEdit->setPlaceholderText("uid");
ui->PassWdlab->setPixmap(QPixmap(":/pictrue/nl.jpg"));
ui->PassWdlab->setScaledContents(true);
ui->PassWdlineEdit->setPlaceholderText("password");
ui->PassWdlineEdit->setEchoMode(QLineEdit::Password);
//设置透明度
ui->PassWdlineEdit->setStyleSheet("background-color: rgba(255, 255, 255, 128);");
ui->NamelineEdit->setStyleSheet("background-color: rgba(255, 255, 255, 128);");
ui->Btn1->setStyleSheet("background-color: rgba(255, 255, 255, 128);");
ui->Btn2->setStyleSheet("background-color: rgba(255, 255, 255, 128);");
//设置两个动图
QMovie *mv = new QMovie(":/pictrue/preview.gif");
mv->start();
ui->giflab1->setMovie(mv);
ui->giflab2->setMovie(mv);
ui->giflab1->setScaledContents(true);
ui->giflab2->setScaledContents(true);
//手动连接到自定义的槽函数中实现关闭窗口
connect(ui->Btn2,SIGNAL(clicked()),this,SLOT(myslots()));
connect(ui->Btn1,&QPushButton::click,this,&Widget::on_Btn1_clicked);
}
void Widget::myslots()
{
QMessageBox msg(QMessageBox::Question,
"question",
"Are you sure you want to log out and log in",
QMessageBox::Yes|QMessageBox::No,
this);
int res = msg.exec();
if(res==QMessageBox::Yes)
{
this->close();
}
}
Widget::~Widget()
{
delete ui;
}
void Widget::on_Btn1_clicked()
{
if(ui->NamelineEdit->text()=="admin"&&ui->PassWdlineEdit->text()=="123456")
{
int res = QMessageBox::information(this,"information","Log in success",QMessageBox::Ok);
if(QMessageBox::Ok==res)
{
this->close();
emit my_jump();
}
}
else
{
int res = QMessageBox::information(this,
"information",
"The account and password do not match,Do you want to log in again",
QMessageBox::Yes|QMessageBox::No);
if(res==QMessageBox::Yes)
{
ui->PassWdlineEdit->clear();
QMessageBox::information(this,"information","continue Log in",QMessageBox::Ok);
}
}
}
second.cpp
cpp
#include "second.h"
#include "ui_second.h"
Second::Second(QWidget *parent) :
QWidget(parent),
ui(new Ui::Second)
{
ui->setupUi(this);
this->setWindowFlag(Qt::FramelessWindowHint);
this->setAttribute(Qt::WA_TranslucentBackground);//去掉空白部分
}
Second::~Second()
{
delete ui;
}
void Second::my_slots()
{
this->show();
}
main.cpp
cpp
#include "widget.h"
#include "second.h"
#include <QApplication>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
Widget w;
w.show();
Second s;
QObject::connect(&w,&Widget::my_jump, &s, &Second::my_slots);
return a.exec();
}