QT5實作一個界面跳轉并且帶參數

 第一個視窗的：

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "second.h"
#include <QPushButton>
#include <QDebug>
MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
     ui->setupUi(this);
     connect(ui->pushButton,&QPushButton::clicked,this,&MainWindow::jiafa);
     sec=new second();
     sec->hide();
     connect(sec,&second::fanhui,[=](){
        sec->hide();
        this->show();
       this->move(sec->x(),sec->y());
     });
}


void MainWindow::jiafa(){
   int first= ui->lineEdit_1->text().toInt();
   int second=ui->lineEdit_2->text().toInt();
   int resultt=first+second;

    ui->result_txt->setText(QString::number(resultt));
}
MainWindow::~MainWindow()
{
    delete ui;
}

void MainWindow::on_pushButton_2_clicked()
{
    this->hide();
    int first= ui->lineEdit_1->text().toInt();
    int second=ui->lineEdit_2->text().toInt();
    int resultt=first+second;
    sec->jieShou(resultt);
    sec->show();
    sec->move(this->x(),this->y());
}
           

第二個視窗的代碼：

#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::on_pushButton_clicked()
{
emit fanhui();
}


void second::jieShou(int shu){
ui->label->setText(QString::number(shu));
}
           

FR：徐海濤（hunk Xu）

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