second.h
cpp
#ifndef SECOND_H
#define SECOND_H
#include <QWidget>
namespace Ui {
class Second;
}
class Second : public QWidget
{
Q_OBJECT
public:
explicit Second(QWidget *parent = nullptr);
~Second();
public slots:
void jump();
private:
Ui::Second *ui;
};
#endif // SECOND_H
widget.h
cpp
#ifndef WIDGET_H
#define WIDGET_H
#include <QWidget>
#include <QMessageBox>
#include <QDebug>
QT_BEGIN_NAMESPACE
namespace Ui { class Widget; }
QT_END_NAMESPACE
class Widget : public QWidget
{
Q_OBJECT
public:
Widget(QWidget *parent = nullptr);
~Widget();
private slots:
void on_close_btn_clicked();
void on_pushButton_clicked();
void on_cancle_clicked();
signals:
void my_jump();
private:
Ui::Widget *ui;
};
#endif // WIDGET_H
main.cpp
cpp
#include "widget.h"
#include "second.h"
#include <QApplication>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
Widget w;
Second s;
QObject::connect(&w,&Widget::my_jump,&s,&Second::jump);
w.show();
return a.exec();
}
second.cpp
cpp
#include "second.h"
#include "ui_second.h"
Second::Second(QWidget *parent) :
QWidget(parent),
ui(new Ui::Second)
{
ui->setupUi(this);
}
void Second::jump()
{
this->show();
}
Second::~Second()
{
delete ui;
}
widget.cpp
cpp
#include "widget.h"
#include "ui_widget.h"
Widget::Widget(QWidget *parent)
: QWidget(parent)
, ui(new Ui::Widget)
{
ui->setupUi(this);
this->setWindowFlag(Qt::FramelessWindowHint);
this->setAttribute(Qt::WA_TranslucentBackground);
}
Widget::~Widget()
{
delete ui;
}
void Widget::on_close_btn_clicked()
{
this->close();
}
void Widget::on_pushButton_clicked()
{
int ret;
QMessageBox login_success(QMessageBox::Information,"msg","登陆成功",QMessageBox::Ok,this);
if(ui->username->text()=="admin" && ui->password->text() == "123456")
{
//对话框
ret = login_success.exec();
this->close();//关闭当前
//跳转其他页面
emit(Widget::my_jump());
}else
{
ret = QMessageBox::information(this,"msg","账号密码不匹配,是否重新登陆?",QMessageBox::Yes | QMessageBox::No);
if(ret == QMessageBox::Yes)
{
ui->password->clear();
}else
{
this->close();
}
}
}
void Widget::on_cancle_clicked()
{
int ret;
ret = QMessageBox::question(this,"sure","是否确定退出登录?",QMessageBox::Yes | QMessageBox::No);
if(ret == QMessageBox::Yes)
{
this->close();
}
}