How register from cmdline .dll ShellExtension with RegSrv32?

[pstein]

How can I register a 64bit ShellExtension in 64bit Win7 from cmdline?

The following does NOT work:

cd /d C:\Windows\SysWOW64
RegSvr32 "D:\tools\myprog\ShellExt.dll"

How can I find out if a ShellExtension is already (successfully) installed?
Can I see it directly in Registry?

Peter

 

[iko22]

What do you mean by "the following does not work"? Are you using an Elevated Command Prompt window when you execute the cmdline?

 

[LMiller7]

The problem is that you are calling the 32 bit version of RegSrv32.exe. To register a 64 bit shell extension you need to use the 64 bit version which is in windows\system32. In 64 bit Windows 64 bit files are in windows\system32 while 32 bit files are in windows\SysWOW64. I know this seems backwards but there are good reasons for it being this way.

There is no standard way to check if a specific shell extension is installed. RegSrv32 calls a function in the specified DLL. The DLL may or not provide a means of telling what it did, if anything.

Edit: Also 64 bit applications are normally installed in the Program Files folder. 32 bit applications are in Program Files (x86). There are good reasons for this as well.

 

[iko22]

Executing the cmdline correctly should generate a pop-up dialog box saying
something similar to

[FONT="Book Antiqua"]DllRegisterServer in ShellExt.dll succeeded.[/FONT]

with "OK" being the only available button on the dialog box.

==Edit==

Ha,ha I have a funny! Found this on StackExchange:

reg query HKLM\SOFTWARE\Classes /s /f ShellExt.dll