【QT】day3

1.登陆界面
2.登陆失败
3.登陆成功弹窗

4.点击OK后跳转

#include "mainwindow.h"
#include "ui_mainwindow.h"MainWindow::MainWindow(QWidget *parent): QMainWindow(parent), ui(new Ui::MainWindow)
{ui->setupUi(this);
}MainWindow::~MainWindow()
{delete ui;
}void MainWindow::on_pushButton_clicked()
{QString username = ui->lineEdit->text();QString password = ui->lineEdit_2->text();if(username=="1" && password=="1"){int ret = QMessageBox::question(this,"问题","登陆成功",QMessageBox::Ok);if(ret == QMessageBox::Ok){emit this->tohome();this->close();}}else{int ret = QMessageBox::question(this,"问题","登陆失败",QMessageBox::Yes | QMessageBox::No);if(ret == QMessageBox::Ok){this->close();}else if(ret == QMessageBox::No){ui->lineEdit->setText("");ui->lineEdit_2->setText("");}}
}