dirlen = strlen(whole_path);
pattern = malloc(dirlen+3);
memcpy(pattern, whole_path, dirlen);

#include <memory>
#include <cstdint>
#include <iostream>
#include <evhttp.h>
#include <string>
#include <fstream>

using namespace std;

int main(){

cout<< "Hi!" << endl ;

if ( !event_init()) 
  cout << "Failed to init libevent." << endl;
else
  cout << "libevent init successfully!" << endl;


return 0;
}

g++ -std=c++11 -o test.ex  test.cpp -levent

./test.ex

"CMake (Windows)
Install CMake: http://www.cmake.org

 $ md build && cd build
 $ cmake -G "Visual Studio 10" ..   # Or whatever generator you want to use
 $ start libevent.sln"

OPENSSL_ROOT_DIR
OPENSSL_INCLUDE_DIR
OPENSSL_CRYPTO_LIBRARY

cmake -DEVENT__DISABLE_OPENSSL=on -G "Visual Studio 14 2015"

	Pic0

	Pic1

	Pic2

	Pic3

	Pic4

	Pic5

	Pic6

	Pic7

	Pic8

#if defined(event_shared_EXPORTS) || \
    defined(event_extra_shared_EXPORTS) || \
    defined(event_core_shared_EXPORTS) || \
    defined(event_pthreads_shared_EXPORTS) || \
    defined(event_openssl_shared_EXPORTS)

# if defined (__SUNPRO_C) && (__SUNPRO_C >= 0x550)
#  define EVENT2_EXPORT_SYMBOL __global
# elif defined __GNUC__
#  define EVENT2_EXPORT_SYMBOL __attribute__ ((visibility("default")))
# elif defined(_MSC_VER)
#  define EVENT2_EXPORT_SYMBOL __declspec(dllexport)
# else
#  define EVENT2_EXPORT_SYMBOL /* unknown compiler */
# endif

#else /* event_*_EXPORTS */

# define EVENT2_EXPORT_SYMBOL

#endif /* event_*_EXPORTS */

/** We need to dllimport event_debug_logging_mask_ into event_extra */
#if defined(_MSC_VER)
# if defined(event_core_shared_EXPORTS) /** from core export */
#  define EVENT2_CORE_EXPORT_SYMBOL __declspec(dllexport)
# elif defined(event_extra_shared_EXPORTS) /** from extra import */
#  define EVENT2_CORE_EXPORT_SYMBOL __declspec(dllimport)
# endif
#endif /* _MSC_VER */
#if !defined(EVENT2_CORE_EXPORT_SYMBOL)
# define EVENT2_CORE_EXPORT_SYMBOL EVENT2_EXPORT_SYMBOL
#endif

GC>#if defined(event_shared_EXPORTS) || \
GC>    defined(event_extra_shared_EXPORTS) || \
GC>    defined(event_core_shared_EXPORTS) || \
GC>    defined(event_pthreads_shared_EXPORTS) || \
GC>    defined(event_openssl_shared_EXPORTS)

GC># if defined (__SUNPRO_C) && (__SUNPRO_C >= 0x550)
GC>#  define EVENT2_EXPORT_SYMBOL __global
GC># elif defined __GNUC__
GC>#  define EVENT2_EXPORT_SYMBOL __attribute__ ((visibility("default")))
GC># elif defined(_MSC_VER)
GC>#  define EVENT2_EXPORT_SYMBOL __declspec(dllexport)
GC># else
GC>#  define EVENT2_EXPORT_SYMBOL /* unknown compiler */
GC># endif

GC>#else /* event_*_EXPORTS */

GC># define EVENT2_EXPORT_SYMBOL

GC>#endif /* event_*_EXPORTS */

GC>/** We need to dllimport event_debug_logging_mask_ into event_extra */
GC>#if defined(_MSC_VER)
GC># if defined(event_core_shared_EXPORTS) /** from core export */
GC>#  define EVENT2_CORE_EXPORT_SYMBOL __declspec(dllexport)
GC># elif defined(event_extra_shared_EXPORTS) /** from extra import */
GC>#  define EVENT2_CORE_EXPORT_SYMBOL __declspec(dllimport)
GC># endif
GC>#endif /* _MSC_VER */
GC>#if !defined(EVENT2_CORE_EXPORT_SYMBOL)
GC># define EVENT2_CORE_EXPORT_SYMBOL EVENT2_EXPORT_SYMBOL
GC>#endif
GC>

[warn] evsig_init_: socketpair: Either the application has not called WSAStartup, or WSAStartup failed.

SLH>[warn] evsig_init_: socketpair: Either the application has not called WSAStartup, or WSAStartup failed.
SLH>

#include <memory>
#include <cstdint>
#include <iostream>
#include <evhttp.h>

using namespace std;

int main()
{
    if (!event_init()) {
        cout << "Failed to init libevent." << endl;
    }
    else {

        cout << "Libevent initialised!" << endl;


        char const SrvAddress[] = "192.168.10.53";
        uint16_t SrvPort = 5555;
        unique_ptr<evhttp, decltype(&evhttp_free)> Server(evhttp_start(SrvAddress, SrvPort), &evhttp_free);
        if (!Server)
        {
            cout << "Failed to init http server." << std::endl;
            return -1;
        }
        void(*OnReq)(evhttp_request *req, void *) = [](evhttp_request *req, void *)
        {
            auto *OutBuf = evhttp_request_get_output_buffer(req);
            if (!OutBuf)
                return;
            evbuffer_add_printf(OutBuf, "<html><body><center><h1>Hello World! under Windows!</h1></center></body></html>");
            evhttp_send_reply(req, HTTP_OK, "", OutBuf);
        };
        evhttp_set_gencb(Server.get(), OnReq, nullptr);
        if (event_dispatch() == -1)
        {
            cout << "Failed to run messahe loop." << std::endl;
            return -1;

        }
    }
    
    return 0;

}

C:\MyProjects\Cpp\LibeEx1\Debug>LibeEx1.exe
[warn] evsig_init_: socketpair: Either the application has not called WSAStartup, or WSAStartup failed.
Libevent initialised!
[warn] socket: Either the application has not called WSAStartup, or WSAStartup failed.
Failed to init http server.

#include <memory>
#include <cstdint>
#include <iostream>
#include <evhttp.h>

using namespace std;

int main()
{
    if (!event_init()) {
        cout << "Failed to init libevent." << endl;
    }
    else {

        cout << "Libevent initialised!" << endl;


        char const SrvAddress[] = "192.168.10.53";
        uint16_t SrvPort = 5555;
        unique_ptr<evhttp, decltype(&evhttp_free)> Server(evhttp_start(SrvAddress, SrvPort), &evhttp_free);
        if (!Server)
        {
            cout << "Failed to init http server." << std::endl;
            return -1;
        }
        void(*OnReq)(evhttp_request *req, void *) = [](evhttp_request *req, void *)
        {
            auto *OutBuf = evhttp_request_get_output_buffer(req);
            if (!OutBuf)
                return;
            evbuffer_add_printf(OutBuf, "<html><body><center><h1>Hello World! under Windows!</h1></center></body></html>");
            evhttp_send_reply(req, HTTP_OK, "", OutBuf);
        };
        evhttp_set_gencb(Server.get(), OnReq, nullptr);
        if (event_dispatch() == -1)
        {
            cout << "Failed to run messahe loop." << std::endl;
            return -1;

        }
    }
    
    return 0;

}

C:\MyProjects\Cpp\LibeEx1\Debug>LibeEx1.exe
[warn] evsig_init_: socketpair: Either the application has not called WSAStartup, or WSAStartup failed.
Libevent initialised!
[warn] socket: Either the application has not called WSAStartup, or WSAStartup failed.
Failed to init http server.

#pragma comment(lib, "OtherLib700.lib")

wl.>#pragma comment(lib, "OtherLib700.lib")
wl.>

---------------------------
LibeEx1.exe - System Error
---------------------------
The code execution cannot proceed because event.dll was not found. Reinstalling the program may fix this problem. 
---------------------------
OK   
---------------------------

SLH>C:\MyProjects\Cpp\LibeEx1\Debug>LibeEx1.exe
SLH>[warn] evsig_init_: socketpair: Either the application has not called WSAStartup, or WSAStartup failed.
SLH>Libevent initialised!
SLH>[warn] socket: Either the application has not called WSAStartup, or WSAStartup failed.
SLH>Failed to init http server.
SLH>

#include <winsock2.h>
#include <ws2tcpip.h>

int net_init() {
    WSADATA data;
    return WSAStartup(MAKEWORD(2,2), &data);
}
void net_done() {
    WSACleanup();
}

#ifdef _WIN32
    WSADATA wsa_data;
    WSAStartup(0x0201, &wsa_data);
#endif