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lineGetMuteState

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Windows Embedded CE 6.0 R3

4/8/2010

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

Syntax

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.
  • 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 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

Header extapi.h
Library cellcore.lib
Windows Embedded CE Windows Embedded CE 6.0 and later
Windows Mobile Pocket PC 2002 and later, Smartphone 2002 and later

See Also

Reference

Extended TAPI Functions