FIX: MFC DAO or ODBC App Crashes on Exit

MORE INFORMATION

This problem occurs only if a dialog resource is loaded. This includes applications that use CFormView-derived classes, such as CRecordView and CDaoRecordView, as well as dialog-based applications.

The following sample code shows the workaround for a default MFC AppWizard application using the MFC DAO classes. The call to LoadLibrary() is added to the Open() function of the CDaoRecordset-derived class named CMySet. Similar logic can be used for the MFC ODBC classes.

To fix the DAOEnrol sample, add the LoadLibrary() call in the sample code below to the CDaoEnrolDoc::OnNewDocument() function, before the call to the base class CDocument::OnNewDocument() function.

To fix the Enroll tutorial, add the LoadLibrary() call in the sample code below to the CEnrollDoc::GetDatabase() function, after the call to m_database.Open().

Sample Code

   void CMySet::Open(int nOpenType, LPCTSTR lpszSql, int nOptions)
   {
       CDaoRecordset::Open(nOpenType, lpszSql, nOptions);

       // Load the Jet Engine to ensure that it remains in memory
       // during the shutdown process.
       LoadLibrary( "MSJT3032.DLL" );
   }