c++ - 我怎样才能把这个qt程序放到一个源代码文件中

Question

我想将这段代码放在一个文件中，但不知道该怎么做。我知道这样做可能不是很好的做法，但我正在尝试学习 qt，如果它在一个文件中，我会发现更容易理解这些信息。

这是main.cpp

#include "mainwindow.h"

#include <QApplication>

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

    MainWindow mainWindow;
    mainWindow.showMaximized();
    return app.exec();
}

这是主窗口.cpp

#include "mainwindow.h"

#include <QCoreApplication>

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
{
    // Create the button, make "this" the parent
    m_button = new QPushButton("My Button", this);
    // set size and location of the button
    m_button->setGeometry(QRect(QPoint(100, 100),
                             QSize(200, 50)));

    // Connect button signal to appropriate slot
    connect(m_button, SIGNAL(released()), this, SLOT(handleButton()));
}

void MainWindow::handleButton()
{
    // change the text
    m_button->setText("Example");
    // resize button
    m_button->resize(100,100);
}

这是主窗口.h

#define MAINWINDOW_H

#include <QMainWindow>
#include <QPushButton>

namespace Ui {
    class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    explicit MainWindow(QWidget *parent = 0);

private slots:
    void handleButton();

private:
    QPushButton *m_button;
};

Answer 1

只需将所有内容复制到一个文件中。

#include <QApplication>
#include <QMainWindow>
#include <QPushButton>

namespace Ui {
    class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    explicit MainWindow(QWidget *parent = 0);

private slots:
    void handleButton();

private:
    QPushButton *m_button;
};

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
{
    // Create the button, make "this" the parent
    m_button = new QPushButton("My Button", this);
    // set size and location of the button
    m_button->setGeometry(QRect(QPoint(100, 100),
                             QSize(200, 50)));

    // Connect button signal to appropriate slot
    connect(m_button, SIGNAL(released()), this, SLOT(handleButton()));
}

void MainWindow::handleButton()
{
    // change the text
    m_button->setText("Example");
    // resize button
    m_button->resize(100,100);
}

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

    MainWindow mainWindow;
    mainWindow.showMaximized();
    return app.exec();
}