Re: CoCreateGuid

From:

"Frederico Pissarra" <me@nowhere.net>

Newsgroups:

microsoft.public.vc.mfc

Date:

Fri, 4 Aug 2006 13:39:27 -0300

Message-ID:

<OQaP5c#tGHA.1508@TK2MSFTNGP05.phx.gbl>

<harshalshete@gmail.com> escreveu na mensagem
news:1154675647.206128.22260@h48g2000cwc.googlegroups.com...

Hi all,

i am trying to create GUID with CoCreateGuid but it is
not creating guid.
I am working on windows XP.
ole32.lib is added in link tab.
then what is the problem?
what is wrong in this code?

#include <iostream.h>
#include<objbase.h>
int main(void)
{
   HRESULT Res;
   GUID *pGuid=NULL;
   LPVOID pIni = NULL;

   if(CoInitialize(pIni) == S_OK)
   {
       Res = CoCreateGuid(pGuid);
       if(Res == S_OK)
       {
           cout<<"Created";
       }
       CoUninitialize();
   }
   return 0;
}

Thanks in advance

Are you getting an access violation or any kind of exception?

CoCreateGuid expects to receive a pointer to a buffer where GUID will be
stored. Notice, in your code, pGuid points to NULL.

#include <iostream.h>
#include<objbase.h>
int main(void)
{
   HRESULT Res;
   GUID guid;

   if (CoInitialize(NULL) == S_OK)
   {
       Res = CoCreateGuid(&guid);
       if (Res == S_OK)
       {
           cout<<"Created";
       }
       CoUninitialize();
   }
   return 0;
}

this is the correct code...

[]s
Fred