TSPI_lineNegotiateTSPIVersion

  • 项目

This function returns the highest SPI version the service provider can operate under for this device, given the range of possible SPI versions.

LONG TSPIAPI TSPI_lineNegotiateTSPIVersion(
  DWORD dwDeviceID, 
  DWORD dwLowVersion, 
  DWORD dwHighVersion, 
  LPDWORD lpdwTSPIVersion 
);

Parameters

  • dwDeviceID
    Line device for which interface version negotiation is to be performed. In addition to device identifiers within the range the service provider supports, this may be the valueINITIALIZE_NEGOTIATION. This value is used to signify that an overall interface version is to be negotiated.
  • dwLowVersion
    Lowest TSPI version number under which TAPI can operate. The most-significant WORD is the major version number and the least-significant WORD is the minor version number.
  • dwHighVersion
    Highest TSPI version number under which TAPI can operate. The most-significant WORD is the major version number and the least-significant WORD is the minor version number.
  • lpdwTSPIVersion
    Pointer to a DWORD. The service provider fills this location with the highest TSPI version number, within the range requested by the caller, under which the service provider can operate. The most-significant WORD is the major version number and the least-significant WORD is the minor version number. If the requested range does not overlap the range supported by the service provider, the function returns LINEERR_INCOMPATIBLEAPIVERSION.

Return Values

Returns zero if the function succeeds, or an error number if an error occurs. The following table shows the return values for this function.

Value Description
LINEERR_INCOMPATIBLEAPIVERSION The API version is incompatible.
LINEERR_OPERATIONUNAVAIL The operation is unavailable.
LINEERR_NODRIVER The driver cannot be found.
LINEERR_OPERATIONFAILED The operation failed.
LINEERR_NOMEM Not enough memory is available.
LINEERR_RESOURCEUNAVAIL The resource is unavailable.

Remarks

When dwDeviceID is INITIALIZE_NEGOTIATION, this function must not return LINEERR_OPERATIONUNAVAIL, because this function (with that value) is mandatory for negotiating the overall interface version even if the service provider supports no line devices.

Requirements

OS Versions: Windows CE 3.0 and later.
Header: Tapicomn.h.
Link Library: Coredll.lib.

See Also

TSPI_lineGetExtensionID | TSPI_lineNegotiateExtVersion | TSPI_providerInit

 Last updated on Saturday, April 10, 2004

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