单例设计模式代码-bxy

struct ConnectInfo
{
const QObject *sender; //发送者
const char *signal_str; //发送信号
const QObject *reciever; //接收者
const char *sig_slot_str; //接收(信号/槽)
Qt::ConnectionType connect_type; //连接类型
};

class SignalController :public QObject
{
Q_OBJECT
public:

//************************************
// Method: setConnectInfo
// FullName: SignalController::setConnectInfo
// Access: public static
// Returns: void
// Qualifier: 连接connectList中的信号与（槽/信号）
// Parameter: struct ConnectInfo * connectList
// Parameter: int item_num
//************************************
static void setConnectInfo(struct ConnectInfo *connectList,int item_num);

static SignalController *getSignalController(QObject *parent = NULL) //获取单实例句柄
{
if (instances == NULL)
{
instances = new SignalController(parent);
instances->setObjectName("SignalController");
}
return instances;
}
virtual ~SignalController()
{
instances = NULL;
qDebug() << "delete SignalController instances ";
}

private:
static SignalController *instances; //单实例句柄

SignalController(QObject *parent = NULL) :QObject(parent) { registerMetaALLType(); }
explicit SignalController(const SignalController &):QObject(NULL) {}
SignalController &operator=(const SignalController &) { return *this; }

void registerMetaALLType(); //注册自定义信号参数类型

CPP

void SignalController::setConnectInfo(struct ConnectInfo *connectList, int item_num)
{
    ;
    ; i < item_num; i++)
    {
        connect(connectList[i].sender, connectList[i].signal_str, connectList[i].reciever, connectList[i].sig_slot_str, connectList[i].connect_type);
    }
}

SignalController *SignalController::instances = NULL;