NetGroupGetUsers c++ error

Hi. Can you help me with this code:
 

NET_API_STATUS ret  = 0 ;
    LPCWSTR servername  = L"MYSERVER";
    LPCWSTR groupname   = L"Administrators";
    LPBYTE buffer    = NULL;
    DWORD entriesRead;
    DWORD totalEntries;
    DWORD resumeHandle = 0;
    #define INFO_BUFFER_SIZE 32767
 
    ret=NetGroupGetUsers (NULL, groupname, 0, &buffer, INFO_BUFFER_SIZE, &entriesRead, &totalEntries, &resumeHandle);

 
I am getting this error:
[Linker error] undefined reference to `NetGroupGetUsers@32'
 
I am using Bloodshed Dev C++.