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lineGetStatusMessages

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

This function enables an application to query which notification messages the application is set up to receive for events related to status changes for the specified line or any of its addresses.


LONG WINAPI lineGetStatusMessages(
  HLINE hLine,
  LPDWORD lpdwLineStates,
  LPDWORD lpdwAddressStates 
);

hLine

Handle to the line device.

lpdwLineStates

Bit array that identifies for which line device status changes a message is to be sent to the application. If a flag is TRUE, that message is enabled; if FALSE, it is disabled. This parameter uses one or more of the LINEDEVSTATE constants.

lpdwAddressStates

Bit array that identifies for which address status changes a message is to be sent to the application. If a flag is TRUE, that message is enabled; if FALSE, it is disabled. This parameter uses one or more of the LINEADDRESSSTATE constants.

Returns zero if the request succeeds or a negative error number if an error occurs. The following table shows the return values for this function.

Value Description

LINEERR_INVALLINEHANDLE

The handle to the open line device is invalid.

LINEERR_OPERATIONFAILED

The operation failed.

LINEERR_INVALPOINTER

The pointer is invalid.

LINEERR_RESOURCEUNAVAIL

The resource is unavailable.

LINEERR_NOMEM

Not enough memory is available.

LINEERR_UNINITIALIZED

A parameter is not initialized.

TAPI defines a number of messages that notify applications about events occurring on lines and addresses. An application may not be interested in receiving all address and line status change messages. The lineSetStatusMessages function can be used to select which messages the application wants to receive. By default, address status and line status reporting is disabled.

Aa918931.note(en-us,MSDN.10).gifNote:
This function is for TAPI version 2.0 and later.

Headertapi.h
Librarycoredll.lib
Windows Embedded CEWindows CE 1.0 and later
Windows MobileWindows Mobile Version 5.0 and later

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