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lineGetProviderList function (tapi.h)

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The lineGetProviderList function returns a list of service providers currently installed in the telephony system.

Syntax

LONG lineGetProviderList(
  DWORD              dwAPIVersion,
  LPLINEPROVIDERLIST lpProviderList
);

Parameters

dwAPIVersion

Highest version of TAPI supported by the application (not necessarily the value negotiated by lineNegotiateAPIVersion on some particular line device).

lpProviderList

Pointer to a memory location where TAPI can return a LINEPROVIDERLIST structure. Prior to calling lineGetProviderList, the application must set the dwTotalSize member of this structure to indicate the amount of memory available to TAPI for returning information.

Note  If the size parameters in the structure are not correct, there is a possibility that data could get overwritten. For more information on setting structure sizes, see the memory allocation topic.
 

Return value

Returns zero if the request succeeds or a negative error number if an error occurs. Possible return values are:

LINEERR_INCOMPATIBLEAPIVERSION, LINEERR_NOMEM, LINEERR_INIFILECORRUPT, LINEERR_OPERATIONFAILED, LINEERR_INVALPOINTER, LINEERR_STRUCTURETOOSMALL.

Requirements

Requirement Value
Target Platform Windows
Header tapi.h
Library Tapi32.lib
DLL Tapi32.dll

See also

LINEPROVIDERLIST

Supplementary Line Service Functions

TAPI 2.2 Reference Overview

lineNegotiateAPIVersion