为什么总是错，好奇怪啊

[tblue7]

CSocket m;
m.Create(portnum)
m.Listen()
就是这么简单几句话，为什么总返回0
端口我也该了几次了，
望大侠指点！

[wflyfox]

需要首先WSAStartup()函数。
int WSAStartup(
WORD wVersionRequested,
LPWSADATA lpWSAData
);


WORD wVersionRequested;
WSADATA wsaData;
int err;

wVersionRequested = MAKEWORD( 2, 2 );

err = WSAStartup( wVersionRequested, &wsaData );
if ( err != 0 ) {
/* Tell the user that we could not find a usable */
/* WinSock DLL. */
return;
}

/* Confirm that the WinSock DLL supports 2.2.*/
/* Note that if the DLL supports versions greater */
/* than 2.2 in addition to 2.2, it will still return */
/* 2.2 in wVersion since that is the version we */
/* requested. */

if ( LOBYTE( wsaData.wVersion ) != 2 ||
HIBYTE( wsaData.wVersion ) != 2 ) {
/* Tell the user that we could not find a usable */
/* WinSock DLL. */
WSACleanup( );
return;
}

[孤必有邻]

调用与CSocket对应的初始化
AfxSocketInit();

[zgh266]

up

[checkyvc6]

AfxSocketInit();
会隐含建立一个窗口来接受消息的

[tblue7]

不用CSocket这个类，建立连接的步骤我知道，可是用了CSocket后要用AfxSocketInit()我确不知道，汗，第一次写一个网络方面的就搞得这么狼狈。谢谢各位大哥的指点，程序已经通过了，分少了点，下次多补写：）