qt的QGamepad的信号槽connect方法

以下三种都可以

connect(m_gamepad, &QGamepad::axisLeftXChanged, this,&GamepadMonitor::moveCloudX); connect(m_gamepad, &QGamepad::axisLeftXChanged, this, [=](double value){moveCloudX(value);}); connect(m_gamepad, SIGNAL(axisLeftXChanged(double)), this, SLOT(moveCloudX(double)));