NetUserModalsSet

The NetUserModalsSet function sets global information for all users and global groups in the security database.

Security Requirements

Windows NT: Typically, only members of the Administrators, Domain Admins, or Enterprise Admins groups can successfully execute the NetUserModalsSet function.

Windows 2000: If you call this function on a Windows 2000 domain controller that is running Active Directory, access is allowed or denied based on the access-control list (ACL) for the securable object. The default ACL permits only Administrators and account operators to call this function. On a member server or workstation, only Administrators and account operators can call this function. For more information, see Security Requirements for the Network Management Functions.

NET_API_STATUS NetUserModalsSet(
  LPCWSTR servername, 
  DWORD level,       
  LPBYTE buf,        
  LPDWORD parm_err   
);

Parameters

servername

[in] Pointer to a constant Unicode string specifying the name of the remote server on which the function is to execute. The string must begin with \\. If this parameter is NULL, the local computer is used.

level

[in] Specifies the information level of the data. This parameter can be one of the following values.

Value	Meaning
0	Specifies global password parameters. The buf parameter points to a USER_MODALS_INFO_0 structure.
1	Specifies logon server and domain controller information. The buf parameter points to a USER_MODALS_INFO_1 structure.
2	Specifies the domain name and identifier. The buf parameter points to a USER_MODALS_INFO_2 structure.
3	Specifies lockout information. The buf parameter points to a USER_MODALS_INFO_3 structure.
1001	Specifies the minimum allowable password length. The buf parameter points to a USER_MODALS_INFO_1001 structure.
1002	Specifies the maximum allowable password age. The buf parameter points to a USER_MODALS_INFO_1002 structure.
1003	Specifies the minimum allowable password age. The buf parameter points to a USER_MODALS_INFO_1003 structure.
1004	Specifies forced logoff information. The buf parameter points to a USER_MODALS_INFO_1004 structure.
1005	Specifies the length of the password history. The buf parameter points to a USER_MODALS_INFO_1005 structure.
1006	Specifies the role of the logon server. The buf parameter points to a USER_MODALS_INFO_1006 structure.
1007	Specifies domain controller information. The buf parameter points to a USER_MODALS_INFO_1007 structure.

buf

[in] Pointer to the buffer that specifies the data. The format of this data depends on the value of the level parameter.

parm_err

[out] Pointer to a DWORD value that receives the index of the first member of the information structure that causes ERROR_INVALID_PARAMETER. If this parameter is NULL, the index is not returned on error. For more information, see the following Remarks section.

Return Values

If the function succeeds, the return value is NERR_Success.

If the function fails, the return value can be one of the following error codes.

Remarks

If the NetUserModalsSet function returns ERROR_INVALID_PARAMETER, you can use the parm_err parameter to indicate the first member of the information structure that is invalid. (The information structure begins with USER_MODALS_INFO_ and its format is specified by the level parameter.) The following table lists the values that can be returned in the parm_err parameter and the corresponding structure member that is in error. (The prefix usrmod*_ indicates that the member can begin with multiple prefixes, for example, usrmod2_ or usrmod1002_.)

The following code sample demonstrates how to set the global information for all users and global groups with a call to the NetUserModalsSet function. The sample fills in the members of the USER_MODALS_INFO_0 structure and calls NetUserModalsSet, specifying information level 0.

#ifndef UNICODE
#define UNICODE
#endif

#include <stdio.h>
#include <windows.h> 
#include <lm.h>

int wmain(int argc, wchar_t *argv[])
{
   DWORD dwLevel = 0;
   USER_MODALS_INFO_0 ui;
   NET_API_STATUS nStatus;
   LPTSTR pszServerName = NULL;

   if (argc > 2)
   {
      fwprintf(stderr, L"Usage: %s [\\\\ServerName]\n", argv[0]);
      exit(1);
   }
   // The server is not the default local computer.
   //
   if (argc == 2)
      pszServerName = argv[1];
   //
   // Fill in the USER_MODALS_INFO_0 structure.
   //
   ui.usrmod0_min_passwd_len = 0;
   ui.usrmod0_max_passwd_age = (86400 * 30);
   ui.usrmod0_min_passwd_age = 0;
   ui.usrmod0_force_logoff = TIMEQ_FOREVER; // never force logoff
   ui.usrmod0_password_hist_len = 0;
   //
   // Call the NetUserModalsSet function; specify level 0.
   //
   nStatus = NetUserModalsSet(pszServerName,
                              dwLevel,
                              (LPBYTE)&ui,
                              NULL);
   //
   // If the call succeeds, inform the user.
   //
   if (nStatus == NERR_Success)
      fwprintf(stderr, L"Modals information set successfully on %s\n", argv[1]);
   //
   // Otherwise, print the system error.
   //
   else
      fprintf(stderr, "A system error has occurred: %d\n", nStatus);

   return 0;
}

If you are programming for Active Directory, you may be able to call certain Active Directory Service Interface (ADSI) methods to achieve the same functionality you can achieve by calling the network management user modal functions. For more information, see IADsDomain.

Requirements

  Windows NT/2000: Requires Windows NT 3.1 or later.
  Windows 95/98: Unsupported.
  Header: Declared in Lmaccess.h; include Lm.h.
  Library: Use Netapi32.lib.

See Also

Network Management Overview, Network Management Functions, User Modals Functions, NetUserModalsGet, USER_MODALS_INFO_0, USER_MODALS_INFO_1, USER_MODALS_INFO_2, USER_MODALS_INFO_3, USER_MODALS_INFO_1001, USER_MODALS_INFO_1002, USER_MODALS_INFO_1003, USER_MODALS_INFO_1004, USER_MODALS_INFO_1005, USER_MODALS_INFO_1006, USER_MODALS_INFO_1007