Getadaptersinfo Failed Error 232
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for all network interfaces on a machine. Surprisingly GetAdaptersInfo() fails when there are more than 14 interfaces. The error code returned is 232 i.e. ERROR_NO_DATA which should be returned only when there exist no adapter on the machine as c++ get ip address windows per MSDN. GetNumberOfInterfaces() returns 14 and GetAdaptersInfo() works fine. GetNumberOfInterfaces() returns 15 and GetAdaptersInfo() fails getadaptersinfo c# with above error.. I tried the ipconfig.exe from platformsdk sample. The same problem exist with it. But if i use winnt\system32\ipconfig which getinterfaceinfo comes with OS, shows all the interface details properly. Any clue why this fails ? is there any other round about way to get this info ? how is ipconfig able to get ? I am using https://msdn.microsoft.com/en-us/library/windows/desktop/aa365917(v=vs.85).aspx this in GUI which can create virtual network interfaces as mux example in windows DDK. Platform: windows 2000 here is the code i am using. int PrintAdaptersInfo() { // Get Adapters Info PIP_ADAPTER_INFO pAdapterInfo = NULL; PIP_ADAPTER_INFO pOriginalPtr; ULONG ulSizeAdapterInfo = 0; DWORD dwStatus; DWORD dwNumIf; GetNumberOfInterfaces( &dwNumIf ); printf("Number of interfaces : %d \n", dwNumIf); // Find out how big our buffer needs to be to hold the data dwStatus http://www.verycomputer.com/1_18dcf0152720cb3e_1.htm = GetAdaptersInfo(pAdapterInfo, &ulSizeAdapterInfo); if (dwStatus == ERROR_BUFFER_OVERFLOW) { // Allocate a buffer of the appropriate size if (!(pAdapterInfo = (PIP_ADAPTER_INFO)malloc(ulSizeAdapterInfo))) { printf("\n Insufficient Memory "); return(1); } // Obtain the Adapter Info dwStatus = GetAdaptersInfo(pAdapterInfo, &ulSizeAdapterInfo); } if (dwStatus != ERROR_SUCCESS) { return(1); } pOriginalPtr = pAdapterInfo; if (pAdapterInfo == NULL) printf("\n No Interfaces Present.\n"); // Step through the adapter list while (pAdapterInfo != NULL) { // Print the Ip Addresses printf("\n\n\t Adapter name for %s- ", pAdapterInfo->AdapterName ); PIP_ADDR_STRING pAddressList = &(pAdapterInfo->IpAddressList); do { printf("\n\t IpAddress = %hs", pAddressList->IpAddress.String); pAddressList = pAddressList->Next; } while (pAddressList != NULL); // And so on with other members of the Adapter info structure... pAdapterInfo = pAdapterInfo->Next; } // while(pAdapterInfo!=NULL){ return 0; Quote:} Regards, Vijay Chegu Top GetAdaptersInfo() fails with > 14 interfaces. by arkady » Sat, 01 Feb 2003 00:37:56 Wow , are you really have 15 network cards on your computer ? Arkady Quote:> Hi, > I am using GetAdaptersInfo() for retreiving IP address information for all > network interfaces on a machine. > Surprisingly GetAdaptersInfo() fails when there are more than 14 interfaces. > The error code returned is 232 i.e. ERROR_NO_DATA which should be returned > only when there
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GetAdaptersAddresses() if in addition to physical adapters you'd like to retrieve adapter/IP info for the loop-back adapter. Adam Dyba Software Design Engineer, Windows CE Microsoft Corporation -- This posting is provided "AS IS" with no warranties, and confers no rights. "Henrik Kristiansen"