From: Ar Vicco <arvitallian@...>
Date: 2011-02-23T08:21:34+09:00
Subject: Re: WIN32OLE Question on Accessing an Enum

OK, I'm in a similar fix with an OLE method that expects an enum...

I'm driving a proprietary COM object using WIN32OLE, and one of the
classes has a PROPERTYPUT method 'type' that expects enum of type
TRequestType, defined in the same typelib. In the documentation, this
method is described like this:

Property: type [in/out] enum TRequestType

When I run olegen script on this typelib, this is what comes out of it:

class DataStream
...
  def type=(arg0)
    @dispatch._setproperty(4, [arg0], [VT_DISPATCH])
  end
...
end

module TRequestType
  include WIN32OLE::VARIANT
  attr_reader :lastargs

  RT_LOCAL = 0
  RT_COMBINED_SNAPSHOT = 1
  RT_COMBINED_DYNAMIC = 2
  RT_REMOTE_SNAPSHOT = 3
  RT_REMOVE_DELETED = 4
  RT_REMOTE_ONLINE = 8
end

OLE method stub seems to expect an OLE object, but I cannot instantiate
TRequestType enum... It has CLSID, but trying WIN32OLE.new with this 
CLSID gives:
-----
WIN32OLERuntimeError: failed to create WIN32OLE object from 
`{508266CF-A83D-46FE-95B3-E8F892950E61}'

When I try to give this method Fixnum (say 1) instead of enum, I get:
-----
TypeError: not valid value

WIN32OLE documentation does not mention how to work with OLE enums. I
tried to fiddle with WIN32OLE_VARIANT, but was unable to fugure out how
to use it properly... So, essentially I have no idea how to make this
enum and pass it into method that expects it. :(

Any help pushing me in the right direction is greatly appreciated... At
the very minimum, I need to understand in what direction to dig, and now
I'm at a total loss... Help?

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