lineGetRadioPresence (Windows Embedded CE 6.0)

1/6/2010

Use the lineGetRadioPresence function to determine whether a radio module is present.

Syntax

LONG WINAPI lineGetRadioPresence(
  HLINE hLine,
  LPDWORD lpdwRadioPresence
);

Parameters

• hLine
  The line device handle. The line device handle must have been previously obtained by a call to lineOpen with the proper TAPI device ID specified and a device-specific extension version successfully negotiated with lineNegotiateExtVersion.

• lpdwRadioPresence
  Points to a DWORD which indicates whether there is a radio present. See the Radio Presence constants for possible values.

Return Value

Returns zero if the function completes successfully, or a negative error number if an error occurs. The following are possible return values.

• LINEERR_RESOURCEUNAVAIL
• LINEERR_INVALLINEHANDLE
• LINEERR_STRUCTURETOOSMALL
• LINEERR_INVALPOINTER
• LINEERR_UNINITIALIZED
• LINEERR_NOMEM
• LINEERR_OPERATIONUNAVAIL
• LINEERR_OPERATIONFAILED

Remarks

This function is synchronous. No LINE_REPLY message is sent.

Requirements

See Also

Reference

Extended TAPI Functions
Radio Presence