lineRemoveProvider
The
lineRemoveProvider function removes an existing Telephony Service Provider from the Telephony
system.
LONG lineRemoveProvider(
DWORD dwPermanentProviderID,
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|
HWND hwndOwner
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);
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Parameters
dwPermanentProviderID
The permanent provider ID of the service provider to be removed.
hwndOwner
A handle to a window to which any dialogs which need to be displayed as part
of the removal process (for example, a confirmation dialog by the service
provider's
TSPI_providerRemove function) would be attached. Can be a NULL value to indicate that any window
created during the function should have no owner window.
Return Values
Returns zero if the request is successful or a negative error number if an
error has occurred. Possible return values are:
LINEERR_INIFILECORRUPT, LINEERR_NOMEM, LINEERR_INVALPARAM,
LINEERR_OPERATIONFAILED.
Remarks
If the call to
TSPI_providerRemove is successful, and the telephony system is active at the time, TAPI calls
TSPI_lineShutdown and/or
TSPI_phoneShutdown on the service provider (depending on which device types are active). Any
line or phone handles still held by applications on associated devices are
forcibly closed with LINE_CLOSE or PHONE_CLOSE messages (it is preferable for service
providers themselves to issue these messages as part of
TSPI_providerRemove, after verification with the user). The devices previously under the control
of that provider are then marked as "unavailable", so that any future attempts
by applications to reference them by device ID result in LINEERR_NODRIVER.
Although this is a new function which older applications would not be expected
to call, for backward compatibility, they should not be prevented from doing
so. The function will work the same way for all applications.
See Also
LINE_CLOSE,
PHONE_CLOSE
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