Re: PostMessage return access denied

From:
Bob Moore <>
Newsgroups:
microsoft.public.vc.mfc
Date:
Tue, 05 Jun 2007 20:46:21 +0100
Message-ID:
<g5fb63dei35bdgm3d3396mhbjhu7tmc3np@4ax.com>
On Mon, 04 Jun 2007 06:52:50 -0700, Gurmit Teotia wrote:

Yes, it's running. I've verified the error using "FormatMessage" as
well. I'm using following code to run "osk.exe"


Have you tried using a NULL DACL SD? See below:

static SECURITY_ATTRIBUTES g_sa = {0};
static HANDLE g_hsa = 0;

BOOL CreateNullDaclSd ()
{
   BOOL bRetVal = FALSE;
   g_sa.nLength = sizeof(g_sa);
   g_hsa = GlobalAlloc (GHND,SECURITY_DESCRIPTOR_MIN_LENGTH);
   g_sa.lpSecurityDescriptor = GlobalLock(g_hsa);
   g_sa.bInheritHandle = TRUE;

   if (InitializeSecurityDescriptor (g_sa.lpSecurityDescriptor, 1))
   {
      if (SetSecurityDescriptorDacl (g_sa.lpSecurityDescriptor,
                                     TRUE,
                                     NULL,
                                     FALSE))
      {
         bRetVal = TRUE;
      }
      else
      {
         OutputDebugString ("CNDS: cannot set sd DACL\n");
      }
   }
   else
   {
       OutputDebugString("CNDS: cannot initialise sd\n");
   }
   return bRetVal;
}

void FreeNullDaclSd ()
{
   GlobalUnlock (g_hsa);
   GlobalFree (g_hsa);
}

--
Bob Moore
http://bobmoore.mvps.org/
(this is a non-commercial site and does not accept advertising)
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