Win32 COM ENUM members--how?

[ETasse]

Trying to get at the ENUM constants of a particular COM object (MQSeries Automation Classes for ActiveX). In the following example, I've had to define

$MQOO_BROWSE

$MQOO_FAIL_IF_QUIESCING

as local variables, even though they are available as ENUM members in Visual Basic.

$comMQ = new COM("MQAX200.MQSession") or die("Cannot start COM MQAX200.MQSession");
$comMQM = $comMQ->AccessQueueManager($queuemanager);
$comMQQ = $comMQM->AccessQueue( $queuename, $MQOO_BROWSE | $MQOO_FAIL_IF_QUIESCING);

Q: How do I get to those Enum variables inside my COM object.

void com_isenum(object com_module)

is undocumented and doesn't seem to do much.