QT删除信号于槽连接

void MainForm::qt_static_metacall(QObject *_o, QMetaObject::Call _c, int _id, void **_a)
{
    if (_c == QMetaObject::InvokeMetaMethod) {
        auto *_t = static_cast<MainForm *>(_o);
        Q_UNUSED(_t)
        switch (_id) {
        case 0: _t->..._clicked(); break;
        case 1: _t->..._clicked(); break;
        case 2: _t->..._clicked(); break;
        case 3: _t->..._clicked(); break;
        case 4: _t->..._clicked(); break;
        default: ;
        }
    }
    Q_UNUSED(_a);
}