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How to unregister an ocx

Posted on 2001-06-13
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Last Modified: 2012-06-21
I'm testing an app on a machine and I need to unregister an ocx in order to test my app.  I need to know how it will behave with the ocx not being registered.  I've tried KB but there aren't any good samples of how to use the switches.  I know ytou have to use the /u but what is the correct syntax?

KB showed a sample like this: [/u[:c:\windows\system]]comctl32.ocx
This makes no sense to me.

does anyone know how to do this and test to see if infact that ocx is unregistered?

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Question by:SE081398
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Accepted Solution

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BartonM earned 50 total points
ID: 6189672
Hello,

The syntax for unregistering is:

regsvr32 /u "C:\WinDir\SystemDir\OcxName.ocx"

In Access you can see if an ocx is registered in
Tools->References (only available when you have a module opened) or if it is a control in Tools->ActiveX Controls.

BartonM
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Expert Comment

by:CJHarrap
ID: 6189838
or...
if the OCX is a web one, e.g an intranet ActiveX control, go to C:\windows\downloaded programs\ find the OCX control you want, then right click and choose remove or update...

Cheers,

CJ.
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Expert Comment

by:CJHarrap
ID: 6189847
or...
if the OCX is a web one, e.g an intranet ActiveX control, go to C:\windows\downloaded programs\ find the OCX control you want, then right click and choose remove or update...

Cheers,

CJ.
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Expert Comment

by:cjswimmer
ID: 6190717
here is a great trick that has saved me tons of time.  If you are using WinNT, open Notepad and enter the following text exactly:

REGEDIT4
[HKEY_CLASSES_ROOT\ocxfile\Shell\Register\command]
@="C:\\WINNT\\SYSTEM32\\Regsvr32.exe \"%1\""
[HKEY_CLASSES_ROOT\ocxfile\Shell\Unregister\command]
@="C:\\WINNT\\SYSTEM32\\Regsvr32.exe /u \"%1\""
[HKEY_CLASSES_ROOT\dllfile\Shell\Register\command]
@="C:\\WINNT\\SYSTEM32\\Regsvr32.exe \"%1\""
[HKEY_CLASSES_ROOT\dllfile\Shell\Unregister\command]
@="C:\\WINNT\\SYSTEM32\\Regsvr32.exe /u \"%1\""

now save the file as 'OCX_DLL_Reg.reg'

double click the file after you save it and you will get a message saying the information has been entered into the registry.  now whenever you right click on a DLL or OCX file, you will see an entry in the pop-up list to REGISTER ir UNREGISTER the file.  You can also make another file with the following if you are using Win98 (or 95, ME etc.)

REGEDIT4
[HKEY_CLASSES_ROOT\ocxfile\Shell\Register\command]
@="C:\\WINDOWS\\SYSTEM\\Regsvr32.exe \"%1\""
[HKEY_CLASSES_ROOT\ocxfile\Shell\Unregister\command]
@="C:\\WINDOWS\\SYSTEM\\Regsvr32.exe /u \"%1\""
[HKEY_CLASSES_ROOT\dllfile\Shell\Register\command]
@="C:\\WINDOWS\\SYSTEM\\Regsvr32.exe \"%1\""
[HKEY_CLASSES_ROOT\dllfile\Shell\Unregister\command]
@="C:\\WINDOWS\\SYSTEM\\Regsvr32.exe /u \"%1\""

I saved this as '98_OCX_DLL_Reg.reg'. I have both of these saved in a shared dir so I can double click them from client machines for fast reg and dereg actions depending on which system they are running.


hope this helps - cjswimmer
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Author Comment

by:SE081398
ID: 6191461
Thanks that's what I was looking for.  I was doing everything similar to that but after the 50th attempt I lost my patience.  Jswimmer has a good idea too.
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Author Comment

by:SE081398
ID: 6191486
cjswimmer that's a good idea.  I'd like to award 50 points cuz I believe I will use you idea for somthing else.  I will leave a Q "points for Cjswimmer" thanks.

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Expert Comment

by:cjswimmer
ID: 6191501
[/u[:c:\windows\system]]comctl32.ocx

to explain the syntax, everything encapsulated in a square bracket is optional
[/u] is optional (but necessary in order to unregister)
[c:\windows\system] is optional, but you must put a different path if you are trying to affect a file in a differet location than this default value
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