C / C++ / MFC

markt wrote:

scott meyers was worth buying

void CMyAsyncSocket::OnReceive(int nErrorCode)
{
    <font color="Green">// loop receiving datagrams until there's no more to receive this FD_READ cycle</font>
    while (1)
    {
        int BytesIn = ReceiveFrom(Buff, BuffSize, SenderAdd, SenderPrt);

        if (0 == BytesIn)
        {
            <font color="Green">// connection closed (TCP sockets only - should never get here with UDP)</font>
            return;
        }
        else if (SOCKET_ERROR == BytesIn)
        {
            DWORD errcode = GetLastError();
            if (WSAEWOULDBLOCK == errcode)
            {
                <font color="Green">// no more datagrams available to receive - just return</font>
                return;
            }
            else
            {
                <font color="Green">// some bad error occurred - errcode is the error code</font>
                return;
            }
        }

        <font color="Green">// Datagram successfully received!</font>
        PacketsRcvd++;

        <font color="Green">// this does nothing
        //CAsyncSocket::OnReceive(nErrorCode);</font>
    }
}

Mark Salsbery
Microsoft MVP - Visual C++

Alberto Bar-Noy wrote:

...the IDM_MYITEM value is nowhere to be found in the wParam of the message.

ginjikun wrote:

is it ok to call it as shown below

LPTSTR str = _T("something");
func(str);

LPWSTR str = L"something"