Question

我需要一种从窗口3转到窗口2的方法，请注意，从窗口2打开主窗口很容易，但是从3到2直到现在都不可能，这是我的代码，请让我知道是否可以解决，我们将不胜感激。

mainwindow.h

import plotly.express as px
iris = px.data.iris()
fig = px.scatter(iris, y="sepal_length")
fig.show()

window2.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include "window2.h"

QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACE

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    MainWindow(QWidget *parent = nullptr);
    window2 *W2;
    ~MainWindow();

private slots:
    void on_pushButton_clicked();

private:
    Ui::MainWindow *ui;
};
#endif // MAINWINDOW_H

window3.h

#ifndef WINDOW2_H
#define WINDOW2_H

#include <QWidget>
#include "window3.h"

namespace Ui {
class window2;
}

class window2 : public QWidget
{
    Q_OBJECT

public:
    explicit window2(QWidget *parent = nullptr);
     window3 *W3;
    ~window2();

private slots:
     void on_pushButton_clicked();

private:
    Ui::window2 *ui;
};

#endif // WINDOW2_H

main.cpp

#ifndef WINDOW3_H
#define WINDOW3_H

#include <QWidget>
#include "windows2.h"

namespace Ui {
class window3;
}

class window3 : public QWidget
{
    Q_OBJECT

public:
    explicit window3(QWidget *parent = nullptr);
     window2 *W2;
    ~window3();

private slots:
    void on_pushButton_clicked();

private:
    Ui::window3 *ui;
};

#endif // WINDOW3_H

mainwindow.cpp

#include "mainwindow.h"

#include <QApplication>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow w;
    w.show();
    return a.exec();
}

window2.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "window2.h"

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);
}

MainWindow::~MainWindow()
{
    delete ui;
}


void MainWindow::on_pushButton_clicked()
{
    W2 = new window2;
    W2->show();
    this->close();
}

window3.cpp

    #include "window2.h"
#include "ui_window2.h"

window2::window2(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::window2)
{
    ui->setupUi(this);
}

window2::~window2()
{
    delete ui;
}

void window2::on_pushButton_clicked()
{
    W3 = new window3;
    W3->show();
    this->close();
}

这是我要犯的错误

#include "window3.h"
#include "ui_window3.h"

window3::window3(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::window3)
{
    ui->setupUi(this);
}

window3::~window3()
{
    delete ui;
}

void window3::on_pushButton_clicked()
{
    W2 = new window2;
    W2->show();
    this->close();
}

从主窗口到窗口2到窗口3到窗口2

0 个答案: