The FwpmCalloutDeleteByKey0 function deletes a callout from the filter engine.
NTSTATUS FwpmCalloutDeleteByKey0( HANDLE engineHandle, const GUID *key );
A handle for an open session to the filter engine. A callout driver calls the FwpmEngineOpen0 function to open a session to the filter engine.
A pointer to a GUID that uniquely identifies the callout that is being deleted from the filter engine. This must be a pointer to the same GUID that was specified when the callout driver called the FwpmCalloutAdd0 function to add the callout to the filter engine.
The FwpmCalloutDeleteByKey0 function returns one of the following NTSTATUS codes.
||The callout was successfully deleted from the filter engine.|
||One or more filters in the filter engine specify the callout for the filter's action.|
||There is not a callout in the filter engine that matches the GUID specified in the key parameter.|
||An error occurred.|
A callout driver calls the FwpmCalloutDeleteByKey0 function to delete a callout from the filter engine, using the GUID key to identify the callout to be deleted.
Callout drivers do not typically delete their callouts from the filter engine. In most situations, this is handled by a user-mode Windows Filtering Platform management application.
A callout can be deleted from the filter engine only if there are no filters in the filter engine that specify the callout for the filter's action.
|Minimum supported client||Available starting with Windows Vista.|
|Header||fwpmk.h (include Fwpmk.h)|