Network Message

• Download demo project - 35.78 KB

Introduction

This application is used as net send message in Windows. This application retrieves all the usernames in LAN into a listbox and user can select any username and sendmessage. By this application, no need to remember all the usernames in LAN.

void CNetworkDlg::DisplayUsers()
{
    m_list.ResetContent();
    nUsers=0;
        CString str;
    
    struct HostInfo
    {
        char *csName;
        char *csAdr;
        char *csComment;
    };
    struct hostent *host;
    struct in_addr *ptr;    
    DWORD dwScope = RESOURCE_CONTEXT;
    NETRESOURCE *NetResource = NULL;
    HANDLE hEnum;
    WNetOpenEnum(dwScope, NULL, NULL, NULL, &hEnum);
    WSADATA wsaData;
    WSAStartup(MAKEWORD(2,2),&wsaData);
    UINT item = 0;
    if (hEnum)
    {
        DWORD Count = 0xFFFFFFFF;
        DWORD BufferSize = 2048*8;
        LPVOID Buffer = new char[2048*8];
        
        WNetEnumResource(hEnum, &Count, Buffer, &BufferSize);
        
        NetResource = (NETRESOURCE*)Buffer;
        
        char szHostName[200];
        
        for (UINT i = 0; i < BufferSize/sizeof(NETRESOURCE); 
                                            i++, NetResource++)
        {
            if (NetResource->dwUsage == RESOURCEUSAGE_CONTAINER 
                && NetResource->dwType == RESOURCETYPE_ANY)
            {
                if (NetResource->lpRemoteName)
                {
                    CString strFullName = NetResource->lpRemoteName;
                    
                    char buf[512];
                    
                    if (0 == strFullName.Left(2).Compare("\\\\"))
                        strFullName = 
                          strFullName.Right(strFullName.GetLength()-2);
                    m_list.AddString(strFullName);
                    nUsers++;                                        
                }
            }
            WNetCloseEnum(hEnum);
        }    
        WSACleanup();
        CString st;
        st.Format("Total Users:%d",nUsers);
        SetDlgItemText(IDC_STATIC1,st);
                }
}

History

• 2^nd December, 2004: Initial post