大侠们，如何取得所在局域网的所有电脑的名字？

Question

WNetX函数族，能实现这一功能。详细参考MSDN

Answer 1

试一试WNetEnumResource函数，msdn上有详细介绍。

Answer 2

用DsGetDcName函数：
DWORD DsGetDcName(
  LPCTSTR ComputerName,
  LPCTSTR DomainName,
  GUID *DomainGuid,
  LPCTSTR SiteName,
  ULONG Flags,
  PDOMAIN_CONTROLLER_INFO
  );
 

Answer 3

DsGetDcName()是NT5专用函数，9X不支持。

Answer 4

#include <winnetwk.h>
//获取网上邻居的列表,存储在串表中
bool EnumNetResource(TStrings *rcList,LPNETRESOURCE lpNR, DWORD dwScope,DWORD dwType)
{
    HANDLE hEnum = 0;
    DWORD dwResult = WNetOpenEnum(
            dwScope,    // scope of enumeration
            dwType,        // resource types to list
            0,        // enumerate all resources
            lpNR,        // pointer to resource structure (NULL at first time)
            &hEnum        // handle to resource
            ) ;
    if( dwResult != NO_ERROR ) return false;    bool bRet=true;
    DWORD dwEntries = 0xFFFFFFFF ;    // enumerate all possible entries
    NETRESOURCE NR[1024];
    DWORD dwBuffer=1024*sizeof(NETRESOURCE);    while(1) {
        dwResult =    WNetEnumResource(
                hEnum,        // resource-handle
            &dwEntries,
            (LPVOID)NR,
            &dwBuffer
            ) ;
        if( dwResult == ERROR_NO_MORE_ITEMS ) break;
    else if( dwResult != NO_ERROR ) { bRet=false; break;}        for(DWORD i = 0 ; i < dwEntries ; i++ ) {
            if(NR[i].dwDisplayType==RESOURCEDISPLAYTYPE_SERVER) {
                char *p=NR[i].lpRemoteName;
                while(*p=='\\') p++;
        if(*p) rcList->Add(p);
            } else if((NR[i].dwUsage&RESOURCEUSAGE_CONTAINER)==
                                          RESOURCEUSAGE_CONTAINER) {
        bRet=EnumNetResource(rcList,&NR[i],dwScope,dwType);
                if(bRet==false) break;
            }
        }
        if(bRet==false) break;
    }    WNetCloseEnum(hEnum) ;
    return bRet;
}
//------获取某主机的IP地址，如果主机名为空，则返回本机的名和IP地址---------AnsiString gethostip(AnsiString &host)
{
    WSADATA wsaData;
    AnsiString IP;    WSAStartup(MAKEWORD(2,0),&wsaData);
    if(host.IsEmpty()) {
        char hostname[128];
        if(gethostname(hostname,128)!=0) return AnsiString("");
    host=hostname;
    }
    try{
        struct hostent *hp=gethostbyname(host.c_str());
        IP=inet_ntoa(*(struct in_addr*)hp->h_addr_list[0]);
    }
    catch(...){
        IP="";
    }
    WSACleanup();
    return IP;
}//----------------------Example-------------------------------------------void __fastcall TForm1::Button1Click(TObject *Sender)
{
    ListBox1->Clear();
    Screen->Cursor=crHourGlass;
    EnumNetResource(ListBox1->Items,NULL,RESOURCE_GLOBALNET,RESOURCETYPE_ANY);
    Screen->Cursor=crDefault;
}
void __fastcall TForm1::Button2Click(TObject *Sender)
{
    if(ListBox1->ItemIndex==-1) return;
    Screen->Cursor=crHourGlass;
    AnsiString IP=gethostip(ListBox1->Items->Strings[ListBox1->ItemIndex]);
    Screen->Cursor=crDefault;
    Edit1->Text=IP;
    if(IP=="") ShowMessage("无法与主机联系！");
}