lineSetMuteState

Windows Mobile 6.5
A version of this page is also available for
4/8/2010

Use the lineSetMuteState function to set the mute state.


LONG WINAPI lineSetMuteState(
  HLINE hLine,
  DWORD dwState
);

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.

dwState

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.

Returns a positive request identifier if the function is completed asynchronously, or a negative error number if an error occurs. The dwParam2 parameter of the corresponding LINE_REPLY message is zero if the function succeeds or it is a negative error number if an error occurs. The following are possible return values:

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

Headerextapi.h
Librarycellcore.lib
Windows Embedded CEWindows CE 3.0 and later
Windows MobilePocket PC 2002 and later, Smartphone 2002 and later

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