使用手动连接,将登录框中的取消按钮使用qt4版本的连接到自定义的槽函数中,在自定义的槽函数中调用关闭函数
将登录按钮使用qt5版本的连接到自定义的槽函数中,在槽函数中判断ui界面上输入的账号是否为"admin",密码是否为"123456",如果账号密码匹配成功,则输出“登录成功”,并关闭该界面,如果匹配失败,则输出登录失败,并将密码框中的内容清空
widget..cpp
#include "widget.h"
#include "ui_widget.h"
Widget::Widget(QWidget *parent)
: QWidget(parent)
, ui(new Ui::Widget)
{
ui->setupUi(this);
this->setWindowTitle("QQ");
this->setWindowIcon(QIcon(":/picture/qq.png"));
this->setFixedSize(500,400);
ui->pwsEdit->setEchoMode(QLineEdit::Password);
btn1 = new QPushButton("登录",this);
btn1->move(150,200);
connect(btn1,SIGNAL(clicked()),this,SLOT(on_loginBtn_clicked()));
btn2 = new QPushButton("取消",this);
btn2->move(300,200);
connect(btn2,&QPushButton::clicked,this,&Widget::on_cancelBtn_clicked);
btn1->setIcon(QIcon(":picture/login.png"));
btn2->setIcon(QIcon(":picture/cancel.png"));
ui->userNameLab->setFixedSize(60,30);
ui->userNameLab->setPixmap(QPixmap(":/picture/userName.jpg"));
ui->userNameLab->setScaledContents(true);
ui->pwdLab->setFixedSize(60,30);
ui->pwdLab->setPixmap(QPixmap(":/picture/passwd.jpg"));
ui->pwdLab->setScaledContents(true);
}
Widget::~Widget()
{
delete ui;
}
void Widget::on_loginBtn_clicked()
{
if(ui->userNameEdit->text()=="admin"&& ui->pwsEdit->text()=="123456")
{
qDebug()<<"登录成功";
this->close();
}else
{
qDebug()<<"登录失败";
}
}
void Widget::on_cancelBtn_clicked()
{
this->close();
}
widget.h
#ifndef WIDGET_H
#define WIDGET_H
#include <QWidget>
#include <QPushButton>
#include <QIcon>
#include <QDebug>
QT_BEGIN_NAMESPACE
namespace Ui { class Widget; }
QT_END_NAMESPACE
class Widget : public QWidget
{
Q_OBJECT
private slots:
void on_loginBtn_clicked();
void on_cancelBtn_clicked();
public:
Widget(QWidget *parent = nullptr);
~Widget();
private:
Ui::Widget *ui;
//定义按钮1
QPushButton *btn1;
//定义按钮2
QPushButton *btn2;
};
#endif // WIDGET_H