32-bit COM+ component in 64-bit Server 2008?

Before I spend several hours downloading and installing the trial/beta
version of 2008 R2 - which I understand is 64-bit only - does anyone
know if it will support 32-bit COM+ components? I've got some old
legacy VB6 components that I use daily, but I've not found owt on the
MS web-site that helps answer this.

Anyone any experience or knowledge of this?

Cheers,

Chris

 

Hello Chris!

When the Process is 32 bit it shall work.


GP

 

Hi Günter,

This I'm aware of, however COM+ DLL components are executed (at least
on Server 2003 32-bit) by dllhost.exe, which is an integral part of
Windows and COM+, so I have no control over the host process. Thus, is
COM+ on Windows x64 able to host a 32-bit DLL (i.e., is there a 32-bit
layer in COM+ that allows this to work, or do all DLLs hosted by COM+
in x64 have to be 64-bit?)

Cheers,

Chris

 

Well, there is a copy of dllhost.exe in C:\WINDOWS\SysWOW64 so I assume it
will work.

Drew

Hi Günter,

This I'm aware of, however COM+ DLL components are executed (at least
on Server 2003 32-bit) by dllhost.exe, which is an integral part of
Windows and COM+, so I have no control over the host process. Thus, is
COM+ on Windows x64 able to host a 32-bit DLL (i.e., is there a 32-bit
layer in COM+ that allows this to work, or do all DLLs hosted by COM+
in x64 have to be 64-bit?)

Cheers,

Chris

 

Hello Chris!
Hello Drew!

If the correct dllhost is started.

I don't know how this components are activated in detail, but I would think
that ComponentServices checkes for the "bitness" and would eigher start 32
bit dllhost in SysWOW64 or 64 bit dllhost in System32.

But I would take only minutes to check.


GP