widget.h
#ifndef WIDGET_H
#define WIDGET_H
#include
#include
#include
#include
#include
#include
#include "second.h"
QT_BEGIN_NAMESPACE
namespace Ui {class Widget;}
QT_END_NAMESPACE
class Widget : public QWidget
{
Q_OBJECT
public:
Widget(QWidget *parent = nullptr);
~Widget();
signals:
void btn1_signal();
public slots:
void btn1_slot();
void btn2_slot();
private:
Ui::Widget *ui;
QPushButton *btn1;
QPushButton *btn2;
QLineEdit *edit1;
QLineEdit *edit2;
QLabel *lab1;
QLabel *lab2;
QLabel *lab3;
Second *s1;
};
#endif
second.h
#ifndef SECOND_H
#define SECOND_H
#include
#include
namespace Ui {
class Second;
}
class Second : public QWidget
{
Q_OBJECT
public:
explicit Second(QWidget *parent = nullptr);
~Second();
public slots:
void jump_slot1();
private:
Ui::Second *ui;
};
#endif
main.cpp
#include "widget.h"
#include "second.h"
#include
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
Widget w;
w.show();
return a.exec();
}
second.cpp
#include "second.h"
#include "ui_second.h"
Second::Second(QWidget *parent) :
QWidget(parent),
ui(new Ui::Second)
{
ui->setupUi(this);
}
Second::~Second()
{
delete ui;
}
void Second::jump_slot1(){
this->show();
}
widget.cpp
#include "widget.h"
#include "ui_widget.h"
#include
#include
Widget::Widget(QWidget *parent)
: QWidget(parent)
,ui(new Ui::Widget)
{
ui->setupUi(this);
s1 = new Second;
//将图形化界面的名字改成登录界面
this->setWindowTitle("Login screen");
//将图标改成自定义图片内容
this->setWindowIcon(QIcon(":/icon/wodepeizhenshi.png"));
//设置ui界面的大小为合适的大小
this->setFixedSize(QSize(400,300));
//插入一个图标
lab1 = new QLabel(this);
lab1->resize(QSize(400,125));
lab1->move(0,0);
//内容要是一张图片
lab1->setPixmap(QPixmap(":/icon/logo.png"));
//设置图片填充
lab1->setScaledContents(true);
//插入两个行编辑器
edit1 = new QLineEdit(this);
edit1->resize(QSize(240,40));
edit1->move(110,150);
edit1->setPlaceholderText("账号");
//输入密码
edit2 = new QLineEdit(this);
edit2->resize(QSize(240,40));
edit2->move(edit1->x(),edit1->y()+55);
edit2->setPlaceholderText("密码");
//回显模式是密码模式
edit2->setEchoMode(QLineEdit::Password);
lab2 = new QLabel(this);
lab2->resize(50,40);
lab2->setPixmap(QPixmap(":/icon/userName.jpg"));
lab2->setScaledContents(true);
lab2->move(edit1->x()-60,edit1->y());
lab3 = new QLabel(this);
lab3->resize(50,40);
lab3->setPixmap(QPixmap(":/icon/passwd.jpg"));
lab3->setScaledContents(true);
lab3->move(edit2->x()-60,edit2->y());
//两个按钮
QPushButton *btn1 = new QPushButton("登录",this);
QPushButton *btn2 = new QPushButton("取消",this);
//重设尺寸
btn1->resize(QSize(60,30));
btn2->resize(btn1->size());
//移动位置
btn1->move(120,edit2->y()+55);
btn2->move(btn1->x()+120,edit2->y()+55);
btn1->setIcon(QIcon(":/icon/login.png"));
btn2->setIcon(QIcon(":/icon/cancel.png"));
//将两个按钮连到自己定义的槽函数中
connect(btn1,&QPushButton::clicked,this,&Widget::btn1_slot);
connect(btn2,&QPushButton::clicked,this,&Widget::btn2_slot);
connect(this, &Widget::btn1_signal,s1,&Second::jump_slot1);
}
void Widget::btn1_slot(){
QMessageBox msgbox;
if(edit1->text()=="admin" && edit2->text()=="123456"){
msgbox.setIcon(QMessageBox::NoIcon);
msgbox.setWindowTitle("LOL");
msgbox.setText("登录成功");
msgbox.setStandardButtons(QMessageBox::Yes);
msgbox.setDefaultButton(QMessageBox::Yes);
int i = msgbox.exec();
if(i == QMessageBox::Yes)
this->close();
}
else{
int ret;
msgbox.setIcon(QMessageBox::Critical);
msgbox.setWindowTitle("LOL");
msgbox.setText("账号密码错误,是否重新登录?");
msgbox.setStandardButtons(QMessageBox::Ok | QMessageBox::Cancel);
msgbox.setDefaultButton(QMessageBox::Ok);
ret = msgbox.exec();
if(ret == QMessageBox::Ok){
edit2->clear();
}
else if(ret == QMessageBox::Cancel){
this->close();
}
}
}
void Widget::btn2_slot(){
int ret =QMessageBox::warning(
this,
"LOL",
"是否退出?",
QMessageBox::Yes|QMessageBox::No,
QMessageBox::Yes);
if(ret == QMessageBox::No){
this->close();
}
}
Widget::~Widget()
{
}