Re: CoCreateInstance and "Class not registered" error...
For starters, verify that CLSIDFromProgID succeeds and returns
you the expected CLSID, then verify the CLSID is indeed
present in the registry under HKCR/Classes. I see you have
an in-proc server, but does its threading model match the
client? E.g. is it Apartment- or Both-threaded? If not, you'll
need marshaling support for your interface(s).
Microsoft MVP [VC], MCSD
MVP VC FAQ: http://www.mvps.org/vcfaq
<email@example.com> wrote in message
I've a dll COM server (commercial, not mine) and I need to implement an
interface from this dll.
I'm using VC6.0 and VC2005. With 2005 it's all ok but not in 6.0...
I create a simple atl object with:
And with Support ISupportErrorInfo checked.
Then in the so created class I implement the interface (right click -
implement interface) AddTypeLib... open the registered dll and select
Then I use:
hresult = CLSIDFromProgID(
hresult = CoCreateInstance(
(LPVOID *) &simple);
The same code in vc2005 works, but if I write this in vc6.0 hresult is
0x80040154 (Class Not Registered)...
I tried almost every CLSCTX_xxx in this call... nothing changes...
What can I do?
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