Re: VC++ 8.0- CoCreateInstance Failed with error 1008

From:

JoDeGr8 <johnemmatty@gmail.com>

Newsgroups:

microsoft.public.vc.language

Date:

Sat, 15 Aug 2009 23:54:58 -0700 (PDT)

Message-ID:

<b27a30a3-72fa-404c-b581-cdfc2958a064@r38g2000yqn.googlegroups.com>

On Aug 16, 11:09 am, "Carl Daniel [VC++ MVP]"
<cpdaniel_remove_this_and_nos...@mvps.org.nospam> wrote:

JoDeGr8 wrote:

Thanks, I am using the following code

CoInitialize(NULL);
IShellWindows *psw;
//AfxMessageBox(L"Reached here1");
if (SUCCEEDED(CoCreateInstance(CLSID_ShellWindows, NULL, CLSCTX_ALL,
IID_IShe=

llWindows, (void**)&psw)))

AfxMessageBox(L"Pass");
else{

CString str;
str.Format(L"%d",GetLastError());
AfxMessageBox(str);
}

Well one problem that you definitely have is calling GetLastError followi=

CoCreateInstsance - there's absolutely no guarantee that GetLastError
returns anything even remotely related to the COM error. Instead, you =

need

to hold onto the HRESULT returned by CoCreateInstance and examine that to
determine why the call is failing.

-cd

Thanks,
The value in the HRESULT is - "Failed to allocate necessary memory"

This problem only occurs within the hook function. Any other function
in the same dll i put this code it is works just fine.

Any security reasons??

Regards,
J