I made a custom widget TabButton to group together some buttons I want to have change the ui based on the objectName of the button that was clicked.
header file:

class TabButton : public QPushButton
{
    Q_OBJECT
private:

public:
    TabButton(QWidget *parent = nullptr);

signals:
    void updateTab(std::tuple<int,int> tabID);

public slots:
    void tabButtonClicked();
};

cpp file:

TabButton::TabButton(QWidget *parent)
    : QPushButton{parent}
{
    connect(this, &TabButton::clicked, this, &TabButton::tabButtonClicked);
}

void TabButton::tabButtonClicked() {
    std::string name = this->objectName().toStdString();
    std::tuple<int,int> id = std::tuple<int, int>{std::stoi(name.substr(2, name.find("_")-2)), std::stoi(name.substr(name.find("_")+1))};
    std::cout << "tabButtonClicked" << std::get<0>(id) << "," << std::get<1>(id) << std::endl;
    qDebug() << "Button clicked. Emitting updateTab signal.";
    emit updateTab(id);
}

The console prints “tabButtonClicked” when any of the promoted “TabButton” buttons are clicked, but in mainwindow.cpp:

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow) , modelPtr(new Model()), tabButton(new TabButton())
{
    ui->setupUi(this);
    connect(tabButton, &TabButton::updateTab, this, &MainWindow::handleTabUpdate);
    qDebug() << "Connection established between TabButton and MainWindow.";
}

void MainWindow::handleTabUpdate(std::tuple<int,int> tabID) {
    qDebug() << "handleTabUpdate called with tabId:" << std::get<0>(tabID) << "," << std::get<1>(tabID);
    int row = std::get<0>(tabID);
    int column = std::get<1>(tabID);
    ui->sectionTabs->setCurrentIndex(row);
    QTabWidget *nestedTab = ui->sectionTabs->findChild<QTabWidget *>(QString::fromStdString("s" + std::to_string(row) + "Widget"));
    nestedTab->setCurrentIndex(column);
}

only “Connection established between TabButton and MainWindow.” is printed.
“handleTabUpdate called with tabID:…” is never printed, and the ui tabs never change.
Any ideas as to what’s wrong?

I tried messing with the header files and making sure everything looked correct, but no luck.