lineGetEquipmentState (Windows Embedded CE 6.0)

1/6/2010

Use the lineGetEquipmentState function to retrieve the state of the radio transmitter and receiver.

Syntax

LONG WINAPI lineGetEquipmentState(
  HLINE hLine,
  LPDWORD lpdwState,
  LPDWORD lpdwRadioSupport
);

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.

• lpdwState
  Points to a DWORD indicating the equipment state. See the Equipment States constants for possible values.

• lpdwRadioSupport
  Indicates the state of the Radio hardware. See the Radio States 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
Equipment States
Radio States