Re: Visual Studio 2005 C++: Office Automation -> Release version crashes

From:

"Hans Stoessel" <hstoessel.list@pm-medici.ch>

Newsgroups:

microsoft.public.vc.language

Date:

Thu, 12 Mar 2009 09:09:18 +0100

Message-ID:

<OquhZnuoJHA.5228@TK2MSFTNGP02.phx.gbl>

Hi

It seems to be a timing problem.

If I build in some waiting times (Sleep(1000)) after CoInitialize and
CoCreateInstance it works!

But this can't be the solution. Is there a possibility to check, if
CoInitialize and/or CoCreateInstance is finished?

Thanks
Hans

"Hans Stoessel" <hstoessel.list@pm-medici.ch> schrieb im Newsbeitrag
news:ePA1%23iloJHA.1288@TK2MSFTNGP02.phx.gbl...

Hi

I try to automate MS Excel via Visual Studio 2005 without MFC. This works
if
I run the debug version, but crashes if I run the release build.

Here is my code snippet to initialize COM and Excel:

bool CExcelInterface::initializeExcel()
{
CLSID clsid;
HRESULT hr = 0;
bool bOK = true;
IDispatch* ipDispatch = NULL;
do {
   // Initialize OLE for this thread...
   hr = CoInitialize(NULL);
   if (FAILED(hr)) {
     bOK = false;
     break;
   }

   // Get CLSID for our server...
   hr = CLSIDFromProgID(L"Excel.Application", &clsid);
   if (FAILED(hr)) {
     bOK = false;
     break;
   }
   // Start server and get IDispatch...
   hr = CoCreateInstance(clsid, NULL, CLSCTX_LOCAL_SERVER, IID_IDispatch,
(void**) &m_pDispApplication)
   if (FAILED(hr)) {
     bOK = false;
     break;
   }
} while (false);
return bOK;
}

This works, as I said, in the debug build, but not in the release build.
In the release build it crashes when I execute CoCreateInstance.

- What could be wrong?
- An option in my project?

Thanks for the help
Hans