meta to object

#include <QApplication>
#include <QWidget>
#include <QApplication>
#include <QWidget>
#include <QPushButton>
#include <QVBoxLayout>
#include <QMetaObject>
#include <QMetaMethod>
#include <QDebug>

// 假设这是自定义的控件类
class MyDerivedWidget1 : public QWidget {
    Q_OBJECT
public:
    explicit MyDerivedWidget1(QWidget *parent = nullptr) : QWidget(parent) {
        QVBoxLayout *layout = new QVBoxLayout(this);
        QPushButton *button = new QPushButton("Click Me", this);
        layout->addWidget(button);

        // 使用 QObject::connect 方法连接信号和槽
        connect(button, &QPushButton::clicked, this, &MyDerivedWidget1::onButtonClicked);
    }

public slots:
    void onButtonClicked() {
        qDebug() << "Button clicked!";
    }
};

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

    // 动态创建控件
    MyDerivedWidget1 *widget = new MyDerivedWidget1();
    widget->show();

    // 获取信号和槽
    const QMetaObject *metaObject = widget->metaObject();
    int signalIndex = metaObject->indexOfSignal(QMetaObject::normalizedSignature("clicked()"));
    int slotIndex = metaObject->indexOfSlot(QMetaObject::normalizedSignature("onButtonClicked()"));

    if (signalIndex != -1 && slotIndex != -1) {
        QMetaMethod signalMethod = metaObject->method(signalIndex);
        QMetaMethod slotMethod = metaObject->method(slotIndex);



        // 动态连接信号和槽
        QObject::connect(widget->findChild<QPushButton*>(), signalMethod, widget, slotMethod);
    } else {
        qDebug() << "Failed to find signal or slot";
    }

    return app.exec();
}

#include"main.moc"
*/
// main.cpp
#include <QApplication>
#include <QMainWindow>
#include <QPushButton>
// main.cpp
#include <QApplication>
#include <QMainWindow>
#include <QPushButton>
#include <QMessageBox>

class MainWindow : public QMainWindow {
    Q_OBJECT

public:
    MainWindow(QWidget *parent = nullptr);

private slots:
    void on_pushButton_clicked();  // 槽函数 1
    void on_pushButton1_clicked(); // 槽函数 2

private:
    QPushButton *pushButton;
    QPushButton *pushButton1;
};

MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent) {
    pushButton = new QPushButton("Click Me", this);
    pushButton->setObjectName("pushButton");
    pushButton->setGeometry(50, 50, 100, 30);  // 设置按钮位置和大小

    pushButton1 = new QPushButton("Click Me Too", this);
    pushButton1->setObjectName("pushButton1");
    pushButton1->setGeometry(50, 100, 100, 30);  // 设置按钮位置和大小

    QMetaObject::connectSlotsByName(this);  // 自动连接槽
}

void MainWindow::on_pushButton_clicked() {
    QMessageBox::information(this, "Button Clicked", "You clicked the first button!");
}

void MainWindow::on_pushButton1_clicked() {
    QMessageBox::information(this, "Button Clicked", "You clicked the second button!");
}

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

    MainWindow window;
    window.show();

    return app.exec();
}

#include "main.moc"  // 包含自动生成的 MOC 代码