login.h

#ifndef LOGIN_H
#define LOGIN_H
#include <QDialog>
#include "mainwindow.h"
#include "login.h"
extern QString login_reg, password_reg;
namespace Ui {
class login;
}

class login : public QDialog
{
    Q_OBJECT

public:
    explicit login(QWidget *parent = 0);
    ~login();

private slots:
    void on_pushButton_clicked();

private:
    Ui::login *ui;
};

#endif // LOGIN_H