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Use the lineGetCallWaitingCapsfunction to retrieve the set of media modes for which call waiting is supported by the radio hardware. The actual set of usable modes may be smaller depending on network capabilities and the provisioning of a particular subscriber.
Syntax
LONG WINAPI lineGetCallWaitingCaps( HLINE hLine, LPDWORD lpdwClasses ); |
Parameters
- hLine
-
The line device handle. The line device handle must have been previously obtained by a call to lineOpenwith the proper TAPI device ID specified and a device-specific extension version successfully negotiated with lineNegotiateExtVersion.
- lpdwClasses
-
Points to a bit field DWORD that enumerates all supported line capability classes. See the Line Capability Classesconstants 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
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
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