作业

头文件

#ifndef WIDGET_H
#define WIDGET_H#include <QWidget>
#include <QMovie>
#include <QPushButton>
#include <QDebug>QT_BEGIN_NAMESPACE
namespace Ui { class Widget; }
QT_END_NAMESPACEclass Widget : public QWidget
{Q_OBJECTpublic:Widget(QWidget *parent = nullptr);~Widget();private:Ui::Widget *ui;public slots:void my_slots1();void my_slots2();};
#endif // WIDGET_H

源文件

#include "widget.h"
#include "ui_widget.h"Widget::Widget(QWidget *parent): QWidget(parent), ui(new Ui::Widget)
{ui->setupUi(this);this->setWindowFlag(Qt::FramelessWindowHint);//设置成纯净模式QMovie *mv1 = new QMovie(":/funny/pic_7.gif");//插入动态图片ui->logoLab->setMovie(mv1);mv1->start();ui->logoLab->setScaledContents(true);//自动适应QMovie *mv2 = new QMovie(":/funny/pic_9.gif");//插入动态图片ui->userNameLab->setMovie(mv2);mv2->start();ui->userNameLab->setScaledContents(true);//自动适应QMovie *mv3 = new QMovie(":/funny/pic_8.gif");ui->passwdLab->setMovie(mv3);mv3->start();ui->passwdLab->setScaledContents(true);ui->passwdEdit->setEchoMode(QLineEdit::Password);ui->userEdit->setPlaceholderText("账号");ui->passwdEdit->setPlaceholderText("密码");//使用qt4实现取消按钮关闭窗口connect(ui->cancelBtn,SIGNAL(),this,SLOT(my_slots1));//使用qt5连接自定义槽函数connect(ui->loginBtn,&QPushButton::clicked,this,&Widget::my_slots2);
}Widget::~Widget()
{delete ui;
}
//自定义槽函数
void Widget::my_slots1()
{ui->cancelBtn->close();
}void Widget::my_slots2()
{if(ui->userEdit->text() == "admin" & ui->passwdEdit->text() == "123456"){qDebug() << "登陆成功";this->close();}else{qDebug() << "登陆失败";ui->passwdEdit->setText("");}}

思维导图