lineGetMuteState

  • Article

Use the lineGetMuteState function to retrieve the mute state of the device.

LONG WINAPI lineGetMuteState(
  HLINE hLine,
  LPDWORD lpdwState
);

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. For more information about lineNegotiateExtVersion and lineOpen, see the TAPI Functions API Reference topics in the Windows CE SDK.
  • lpdwState
    Points to a DWORD indicating the mute state. Possible values are listed in the following table.
    Value Description
    LINEMUTESTATE_MUTEENABLED Mute is enabled.
    LINEMUTESTATE_MUTEDISABLED Mute is disabled.

Return Values

The lineGetMuteState function returns zero if the function completed successfully, and returns 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

Pocket PC Platforms: Pocket PC 2002 and later
OS Versions: Windows CE 3.0 and later
Header: extapi.h
Library: cellcore.lib

Send feedback on this topic to the authors.

© 2005 Microsoft Corporation. All rights reserved.