创建多线程服务器的问题

我正在尝试创建一个多客户端服务器，我设法确保服务器和单个客户端之间的信息交换，但是现在我必须使用线程，以便多个客户端可以同时与服务器连接。

我按照网上的说明做了，但是我得到了一个错误

' CreateThread ':不能将参数3从' unsigned long (void *) '转换为' unsigned long (__stdcall *) (void *) '

你会看到，在这个函数中，我返回0，因为我不知道该返回什么。

#include"serveur.h"
server::server(int p)
{
port = p;
}

int server::init()
{    
WORD wVersionRequested;
WSADATA  Data;
int error= (WSAStartup(MAKEWORD(2,2), &Data ));
if(error != 0 )
{
    cerr <<"WSAStartup a échoué "<< endl;
    return 1;
}
else
{
        ServerAddr.sin_family = AF_INET;
        ServerAddr.sin_port = htons( port );   
        ServerAddr.sin_addr.s_addr=htons(INADDR_ANY) ;  
}
cout <<"server correctement initialise" << endl;    
return 0;   
}
DWORD WINAPI server::ClientThread(void * p)
{
    struct thread_param *Obj = (struct thread_param      *) p ;
    server *s = Obj->ser;       
    cout << "thread client start" << endl;

char buffer[100];
        //**** sent ****
            strcpy(buffer, "coucou n");
            send(Obj->soc, buffer,strlen(buffer), 0);
            cout<<"message envoye"<<endl;
    int reponse = 0;    
        do
        {
        //  cout<<"******** reception ...********"<<endl;
            reponse = recv(Obj->soc, buffer, sizeof(buffer), 0);
            cout<<"reponse"<<reponse<<endl;
            buffer[reponse]='';
            cout<<"msg recu "<<buffer<<endl;
        }while(reponse=0);

return 0;
}
int server::start ()
{
SOCKADDR_IN             ClientAddr;
int                     ClientAddrLen;
HANDLE                  hProcessThread;
struct thread_param     p;
    ListeningSocket = socket(AF_INET, SOCK_STREAM, 0);
    if(ListeningSocket == INVALID_SOCKET)
    {
        perror("socket()");
        exit(-1);
    }
        cout <<"socket correctement creee" << endl;  
if( bind( ListeningSocket, (SOCKADDR *)&ServerAddr, sizeof( ServerAddr ) ) == SOCKET_ERROR )
    {
    cerr<<"bind a echoue avec l'erreur "<< WSAGetLastError()<< endl;
    cerr<<"Le port est peut-être deja utilise par un autre processus "<< endl;
        return 1;
    } 
            cerr<<"Bind... "<< endl;
    if( listen( ListeningSocket, 5 ) == SOCKET_ERROR )
    {
        cerr<<"listen a échoué avec l'erreur "<< WSAGetLastError()<< endl;
        return 1;
    } 
        cout <<"serveur demarre : a l ecoute du port "<<port<< endl; 
        running = true;
        ClientAddrLen = sizeof( ClientAddr );
    while(running)
    {   
if(Newconnection = accept(ListeningSocket, (struct sockaddr *)&ClientAddr, &ClientAddrLen) == INVALID_SOCKET)
        {
     cout<<"accept a echoue avec l erreur "<< WSAGetLastError() << endl;
            return 1;
        }
            p.ser=this;
            p.soc=Newconnection;
            cout<<"client connecte..."<<endl;
        hProcessThread = CreateThread(NULL, 0,ClientThread, &p,0,NULL);
        if ( hProcessThread == NULL )
        {                       
    cerr <<"CreateThread a échoué avec l'erreur "<<GetLastError()<< endl;
        }
    }
    closesocket( ListeningSocket );
            WSACleanup();
return 0;
}