Re: AfxOleInit() and CoInitializeEx in a non-GUI thread ?

From:
Stuart Redmann <DerTopper@web.de>
Newsgroups:
microsoft.public.vc.mfc
Date:
Wed, 14 Apr 2010 07:42:41 -0700 (PDT)
Message-ID:
<257589d2-10ad-4675-b363-5e55cc61656a@11g2000yqr.googlegroups.com>
On 13 Apr., 11:23, "Martin B." <0xCDCDC...@gmx.at> wrote:

[snip]

Looking at the code that sets up our DCOM server interface, I have the
following.
1.) The MFC Application Starts. InitInstance is called, etc.
2.) Many worker threads are started.
3.) A dedicated thread is started for the DCOM interface

Our separate DCOM worker thread does the following:
--
AfxOleInit();
AfxEnableControlContainer();
CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);
...
while(...) {
   // Wait for COM calls or for app terminate
   MsgWaitForMultipleObjectsEx
   ...
   // Dispatch COM calls in this msg loop
   while (PeekMessage(&msg, NULL,0,0, PM_REMOVE)) {
     DispatchMessage(&msg);
   }
   ...
   // Here comes some code to callback registered clients via our
   // dispinterface ...}

...
CoUninitialize();
--

Now I know that AfxOleInit() will already call CoInitialize().

What I do not quite get is what point this call and the call to
AfxEnableControlContainer() could possibly serve in a worker thread.

A very quick test shows that removing them doesn't seem to affect any
operations.

Can anyone tell me what complications we could expect down the round if
we were to remove the call to AfxOleInit and AfxEnableControlContainer ??


Well, AfxOleInit seems only to manage stuff like DDE initialization,
which should be done by the GUI thread anyway.
AfxEnableControlContainer is solely related to GUI threads, so you can
dismiss it as well. Since you have already tried that you are probably
(or rather certainly) on the safe side: I cannot think of any
different answers to your question.

Regards,
Stuart

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