定義事件

struct Event{     int type;     void* data;     struct event  ev; };

//回撥函式處理

static void event_cb(evutil_socket_t fd, short event, void *arg) {     Event* myEvent = (Event*)arg;     if (!myEvent)     {         return ;     }

    switch(myEvent->type)     {     case 0:         std::cout<<"event 1 occur"<<std::endl;         if (myEvent->data)         {             delete[] myEvent->data;         }         break;     default:         break;     }     delete myEvent;     return; }

主函式處理如下：

struct event_base *base;

WORD wVersionRequested;     WSADATA wsaData;     wVersionRequested = MAKEWORD(2, 2);     (void)WSAStartup(wVersionRequested, &wsaData);

    /* Initalize the event library */     base = event_base_new();

Event* myEvent = new Event();     myEvent->type = 0;     myEvent->data = new char[10];     event_assign(&(myEvent->ev), base, -1, EV_PERSIST, event_cb, myEvent);     event_add(&myEvent->ev,NULL);

    //觸發自定義事件     event_active(&myEvent->ev,MY_EVENT_TRAN,0);     event_base_dispatch(base);