void CMfc4Dlg::OnOK()
{
UpdateData(true);
struct MEG
{
char name[20];
char data[200];
}Meg,*pMeg;
CSocket SendSocket;
strcpy(Meg.name,m_name);
strcpy(Meg.data,m_message);
pMeg=&Meg;
SendSocket.Create(1234,SOCK_DGRAM);
SendSocket.SendTo(pMeg,sizeof(Meg),7777,m_ip);
m_show.AddString(m_name+"说:"+m_message);
m_show.SendMessage(WM_VSCROLL,SB_BOTTOM,0); //让列表框跳到最下面