From: Corey Lawson <corey.ssf.lawson@...>
Date: 2005-07-01T02:57:15+09:00
Subject: Re: win32ole object creation failure

Hmm... I found a chunk of VB code here
http://www.planet-source-code.com/vb/scripts/ShowCode.asp?txtCodeId=12394&lngWId=1
(look in the ComDlgEx.cls file) that shows what you need to do in VB
to use comdlg32.dll.

In Ruby, it looks like you can then use this via:

require 'WIN32API'

#If you don't have "Pickaxe" (see p 755) then...

require 'Win32API'
comdlgFileOpen = Win32API.new("comdlg32.dll", "GetOpenFileNameA", ['P'], 'L')

#...and it goes downhill from there. You basically have to make a
(sorry for the C syntax)
struct OPENFILENAME {
...
}
#what is the ruby syntax for defining a struct?

#then use pack() and unpack() to smoosh and unsmoosh things

ofn = OPENFILENAME 

res = comdlgFileOpen.Call(ofn)

#in the ofn instance of the OPENFILENAME struct, you set all sorts of
settings for the
#dialog, including file name patterns, etc.

It looks to be pretty messy, but it's messy for everyone not using
C++, unless your lang (i.e., Delphi) provides nice encapsulations of
the API calls...

Pickaxe also mentions that 
  require 'dl/win32' 
might be a bit more mature. Maybe it's easier to use?



On 6/30/05, gregarican <greg.kujawa@gmail.com> wrote:
> Axel wrote:
> 
> > When I run this (on Windows XP with the Windows Ruby installation
> > package 1.8.2-15), I get the following error:
> >
> >
> > C:/temp/bla.rb:3:in `initialize': Failed to create WIN32OLE object from
> > `MSComDlg.CommonDialog' (WIN32OLERuntimeError)
> >    HRESULT error code:0x80040112
> >       Class is not licensed for use     from C:/temp/bla.rb:3:in `new'
> >         from C:/temp/bla.rb:3
> 
> I get the same result running this on a Windows 2000 box under Ruby
> 1.8.2. Googling around for this Windows API entry it appears as if it
> should be referenced directly using VB and isn't readily available
> through scripting means. At least this URL makes it seem as such -->
> http://www.autoitscript.com/forum/index.php?s=58aec18875ef9a11f9d1b2af990a92c2&showtopic=11379&pid=80340&st=0&#entry80340.
> 
> 
>