RasSetSubEntryPropertiesA function (ras.h)

The RasSetSubEntryProperties function creates a new subentry or modifies an existing subentry of a specified phone-book entry.


DWORD RasSetSubEntryPropertiesA(
  [in] LPCSTR         unnamedParam1,
  [in] LPCSTR         unnamedParam2,
  [in] DWORD          unnamedParam3,
  [in] LPRASSUBENTRYA unnamedParam4,
  [in] DWORD          unnamedParam5,
  [in] LPBYTE         unnamedParam6,
  [in] DWORD          unnamedParam7


[in] unnamedParam1

Pointer to a null-terminated string that specifies the full path and file name of a phone-book (PBK) file. If this parameter is NULL, the function uses the current default phone-book file. The default phone-book file is the one selected by the user in the User Preferences property sheet of the Dial-Up Networking dialog box.

Windows Me/98/95:  This parameter should always be NULL. Dial-up networking stores phone-book entries in the registry rather than in a phone-book file.

[in] unnamedParam2

Pointer to a null-terminated string that specifies the name of an existing entry in the phone book.

[in] unnamedParam3

Specifies the one-based index of the subentry. If the index matches an existing subentry index, the function changes the properties of that subentry. If the index does not match an existing index, the function creates a new subentry.

[in] unnamedParam4

Pointer to the RASSUBENTRY structure that specifies the data for the subentry.

The structure might be followed by an array of null-terminated alternate phone number strings. The last string is terminated by two consecutive null characters. The dwAlternateOffset member of the RASSUBENTRY structure contains the offset to the first string.

[in] unnamedParam5

Specifies the size, in bytes, of the lpRasSubEntry buffer.

[in] unnamedParam6

Pointer to a TAPI device configuration block. This parameter is currently unused. The caller should pass NULL for this parameter. For more information about TAPI device configuration blocks, see the function lineGetDevConfig.

[in] unnamedParam7

Specifies the size of the TAPI device configuration block. This parameter is currently unused. The caller should pass zero for this 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 address or buffer specified by lpRasEntry is invalid.
The phone-book entry does not exist.
The phone book is corrupted or missing components.
The function was called with an invalid parameter.


A RAS phone-book entry can have zero or more subentries, each minimally consisting of a device and a phone number. A phone-book entry with multiple subentries can be configured to dial either the first available subentry or all subentries when the entry is dialed.

Use the RasGetEntryProperties function to retrieve the RASENTRY structure containing information about the subentries of a phone-book entry. The dwSubEntries member indicates the number of subentries and the dwDialMode member indicates the dialing configuration.


The ras.h header defines RasSetSubEntryProperties 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