FwpmCalloutCreateEnumHandle0 function (fwpmu.h)

The FwpmCalloutCreateEnumHandle0 function creates a handle used to enumerate a set of callout objects.

Syntax

DWORD FwpmCalloutCreateEnumHandle0(
  [in]           HANDLE                            engineHandle,
  [in, optional] const FWPM_CALLOUT_ENUM_TEMPLATE0 *enumTemplate,
  [out]          HANDLE                            *enumHandle
);

Parameters

[in] engineHandle

Type: HANDLE

Handle for an open session to the filter engine. Call FwpmEngineOpen0 to open a session to the filter engine.

[in, optional] enumTemplate

Type: FWPM_CALLOUT_ENUM_TEMPLATE0*

Template to selectively restrict the enumeration.

[out] enumHandle

Type: HANDLE*

Handle of the newly created enumeration.

Return value

Type: DWORD

Remarks

If enumTemplate is NULL, all callout objects are returned.

The enumerator is not "live", meaning it does not reflect changes made to the system after the call to FwpmCalloutCreateEnumHandle0 returns. If you need to ensure that the results are current, you must call FwpmCalloutCreateEnumHandle0 and FwpmCalloutEnum0 from within the same explicit transaction.

The caller must call FwpmCalloutDestroyEnumHandle0 to free the returned handle.

The caller needs FWPM_ACTRL_ENUM access to the callouts' containers and FWPM_ACTRL_READ access to the callouts. Only callouts to which the caller has FWPM_ACTRL_READ access will be returned. See Access Control for more information.

FwpmCalloutCreateEnumHandle0 is a specific implementation of FwpmCalloutCreateEnumHandle. See WFP Version-Independent Names and Targeting Specific Versions of Windows for more information.

Requirements

See also

FWPM_CALLOUT_ENUM_TEMPLATE0