From - Tue Sep 16 08:08:27 1997
Path: news.mitre.org!blanket.mitre.org!news.tufts.edu!cam-news-feed5.bbnplanet.com!cam-news-hub1.bbnplanet.com!cpk-news-hub1.bbnplanet.com!news.bbnplanet.com!news-peer.sprintlink.net!news-sea-19.sprintlink.net!news-in-west.sprintlink.net!news.sprintlink.net!Sprint!159.56.2.2!thetimes.pixel.kodak.com!news.kodak.com!newsserver.rdcs.Kodak.COM!not-for-mail
From: TVLE <TVLE@KODAK.COM>
Newsgroups: comp.os.ms-windows.programmer.nt.kernel-mode
Subject: Help: OpenEvent fails with an ERROR_ACCESS_DENIED??
Date: Mon, 15 Sep 1997 17:04:29 -0500
Organization: Eastman Kodak Company
Lines: 37
Message-ID: <341DB0ED.4D78@KODAK.COM>
Reply-To: TVLE <TVLE@KODAK.COM>
NNTP-Posting-Host: hypercube.hidal.kodak.com
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 2.01Gold (WinNT; I)

Hi everyone--

I use IoCreateNotificationEvent() in my driver
to signal when my PCI board has data available
to be read.  In my user app, after I CreateFile()
to open a handle to my driver, I OpenEvent() to 
get the handle to the event.  Why does OpenEvent()fail
with a GetLastError of ERROR_ACCESS_DENIED?  
Please help me to understand what it is that I'm 
doing wrong.  Thanks in advance..

// open driver                                                                                    
if ((m_driverHandle = CreateFile(driverName,                                                      
                 				GENERIC_WRITE | GENERIC_READ,                                     
                 				0,      // no file sharing                                        
                 				0,      // no security descriptor                                 
                 				OPEN_EXISTING,                                                    
                 				FILE_ATTRIBUTE_NORMAL|FILE_FLAG_OVERLAPPED,                       
                 				0       // no template file                                       
                 				)) != INVALID_HANDLE_VALUE)                                       
{                                                                                                 
    // driver opened successfully                                                                 
    // open a handle to the board data available event                                            
    m_boardDataAvailableEventHandle = ::OpenEvent(SYNCHRONIZE, FALSE, DATA_AVAILABLE_EVENT_NAME0);
    if (m_boardDataAvailableEventHandle == NULL)                                                  
    {                                                                                             
        CString error;                                                                            
        error.Format("OpenEvent failed!  Error = 0x%.8x",GetLastError());                         
        AfxMessageBox((LPCTSTR)error);                                                            
        return STATUS_OPEN_DATA_AVAIL_EVENT_FAILED;                                               
    }                                                                                             
                                                                                                  
    // create a thread to wait on the event and read data from the                                
    //  board into the circular buffer                                                            
    // ...
    // ...
}