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ActiveX + Preview + Office + Web


ActiveX Plugin

The ActiveX plugin comes with Directory Opus but, between Opus releases, you can sometimes download a newer version from the plugin’s web page.

The ActiveX plugin allows Directory Opus to view various document types within the Opus viewer pane.

The plugin will hook other programs and viewers into Opus, depending on which compatible software you have installed.

It is designed to work with the following:
[ul][li]Microsoft Office (Word, Excel, PowerPoint, etc., via preview handlers which come with MS OFfice, or via alternative QuickViewPlus preview handlers)[/li]
[li]Legacy Microsoft Office (embedding the Office apps themselves in the viewer pane; not recommended with modern Office where preview handlers work better)[/li]
[li]The standalone MS Office Viewers (free, but possibly legacy)[/li]
[li]Open Office (instructions, but may not work with recent versions)[/li]
[li]Internet Explorer (for HTML, MHT, XML, etc.)[/li]
[li]Adobe Reader (PDF)[/li]
[li]PDF-XChange (PDF)[/li]
[li]Fox-It Reader (PDF)[/li]
[li]Shockwave Flash (SWF)[/li]
[li]Windows built-in Preview Handlers made for Explorer and Outlook (E-mails, Contacts, Fonts, etc.)[/li]
[li]Microsoft XPS documents[/li]
[li]Windows Media Player (but the Opus Movie plugin is generally better for movie playback)[/li]
[li]Zip file contents[/li]
[li]AutoCAD (DWG, DWF, etc.) (instructions)[/li]
[li]DjVu (instructions)[/li]
[li]SVG (instructions)[/li]
[li]Quick View Plus 11 (instructions) (views hundreds of formats) [/li]
[li]And more…[/li][/ul](Related: Autodesk Inventor thumbnails in Opus.)

The plugin includes the ability for 64-bit versions of Opus to use both 32-bit and 64-bit ActiveX viewers. For example, this enables 64-bit users to view PDF and Flash files within the Opus viewer pane, even though Adobe have not produced 64-bit versions of their components.


The new configuration dialog allows you to specify which types of ActiveX controls should be used to view different files. You can also disable certain Preview Handlers entirely if you find they get in the way of other viewers which you prefer. (Some are disabled by default, for example Vista’s plain-text handler.)

Word document:

Excel document:

MHT web page archive:

QuickTime .mov:



Shockwave Flash:



More Info:

For History, the Known Issues list the To-Do list and Translation Tips, please see the plugin’s web page:

Viewer pane and .doc and .xls files
MultiView DLL could not be located
File types not supported by viewer
Quick View Plus
New Docs/ActiveX plugin
Quick View Plus
For Newbies: My lean Dopus 10 power packed!
XP Preview Handlers for Directory Opus and above
Cannot view Microsoft Word .doc files in viewer
Directory Opus executables and hooks
Postscript-Viewer (ps, eps)
How to get Dopus to use my Vista preview handlers?
Cannot view Wordperfect text in Viewer Pane
Quick View Plus
Activex association problem: pdfs in viewer pane

Viewing Office Documents:

You need something installed that provides either a preview handler or an ActiveX control for viewing Word files.

The only things I know of which provide those and work properly these days are MSOffice itself and QuickViewPlus.

(In theory, LibreOffice’s ActiveX control, which is an option during installation, can do it as well, but it has not worked properly in years unless they have fixed it recently.)

[Jan 2017: Cleaned up lots of old discussion that was not very relevant any more.]


I had some machines that did not show Excel-files in DO-preview-pane. It’s a know Office-Bug (I think only 2016), so I share an easy fix for that here.

[code]Windows Registry Editor Version 5.00


"{00020827-0000-0000-C000-000000000046}"=“Microsoft Excel previewer”[/code]
Download fix (.reg-file):

Microsoft Office Excel Preview (422 Bytes)