#include "maintimer.h" //Qt #include //Project // Class instance init MainTimer *MainTimer::_instance = nullptr; MainTimer::MainTimer(QObject *parent) : QObject(parent) { _timer = new QTimer(this); } void MainTimer::init() { connect(_timer, SIGNAL(timeout()), this, SLOT(onTimeout())); connect(_timer, SIGNAL(timeout()), this, SIGNAL(timeout())); _timer->start(_timeout); } MainTimer *MainTimer::I() { if (!_instance) { _instance = new MainTimer(); } return _instance; } void MainTimer::onTimeout() { // no op yet }