PEVENT APIENTRY EngMapEvent	(	IN HDEV	hDev,
		IN HANDLE	hUserObject,
		IN PVOID	Reserved1,
		IN PVOID	Reserved2,
		IN PVOID	Reserved3
	)

Definition at line 104 of file engevent.c.

{
    PENG_EVENT EngEvent;
    NTSTATUS Status;

    /* Allocate memory for the event structure */
    EngEvent = ExAllocatePoolWithTag(NonPagedPool,
                                     sizeof(ENG_EVENT),
                                     GDITAG_ENG_EVENT);
    if (!EngEvent) return NULL;

    /* Zero it out */
    EngEvent->fFlags = 0;
    EngEvent->pKEvent = NULL;

    /* Create a handle, and have Ob fill out the pKEvent field */
    Status = ObReferenceObjectByHandle(EngEvent,
                                       EVENT_ALL_ACCESS,
                                       ExEventObjectType,
                                       UserMode,
                                       &EngEvent->pKEvent,
                                       NULL);
    if (NT_SUCCESS(Status))
    {
        /* Pulse the event and set that it's mapped by user */
        KePulseEvent(EngEvent->pKEvent, EVENT_INCREMENT, FALSE);
        EngEvent->fFlags |= ENG_EVENT_USERMAPPED;
    }
    else
    {
        /* Free the allocation */
        ExFreePool(EngEvent);
        EngEvent = NULL;
    }

    /* Support legacy interface */
    if (Reserved1) *(PVOID*)Reserved1 = EngEvent;
    return EngEvent;
}

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