RasSetEapUserDataA function (ras.h)

Use the RasSetEapUserData function to store user-specific Extensible Authentication Protocol (EAP) information for the specified phone-book entry in the registry.


DWORD RasSetEapUserDataA(
  [in] HANDLE hToken,
  [in] LPCSTR pszPhonebook,
  [in] LPCSTR pszEntry,
  [in] BYTE   *pbEapData,
  [in] DWORD  dwSizeofEapData


[in] hToken

Handle to a primary or impersonation access token that represents the user for which to store data. This parameter can be NULL if the function is called from a process already running in the user's context.

[in] pszPhonebook

Pointer to a null-terminated string that specifies the full path of the phone-book (PBK) file. If this parameter is NULL, the function uses the system phone book.

[in] pszEntry

Pointer to a null-terminated string that specifies an existing entry name.

[in] pbEapData

Pointer to the data to store for the user.

[in] dwSizeofEapData

Specifies the size of the data pointed to by the pbEapData parameter.

Return value

If the function succeeds, the return value is ERROR_SUCCESS.

If the function fails, the return value is one of the following error codes or a value from Routing and Remote Access Error Codes or Winerror.h.

Value Meaning
The dwSizeofEapData parameter is zero, or the pbEapData parameter is NULL.
RasSetEapUserData was unable to open the specified phone-book file.
RasSetEapUserData was unable to find the specified entry in the phone book.
Use FormatMessage to retrieve the system error message that corresponds to the error code returned.



The ras.h header defines RasSetEapUserData as an alias which automatically selects the ANSI or Unicode version of this function based on the definition of the UNICODE preprocessor constant. Mixing usage of the encoding-neutral alias with code that not encoding-neutral can lead to mismatches that result in compilation or runtime errors. For more information, see Conventions for Function Prototypes.


Minimum supported client Windows 2000 Professional [desktop apps only]
Minimum supported server Windows 2000 Server [desktop apps only]
Target Platform Windows
Header ras.h
Library Rasapi32.lib
DLL Rasapi32.dll

See also



Remote Access Service (RAS) Overview

Remote Access Service Functions