dualserver.cpp

ATL开发指南PDF格式

//
// Chapter6_DualServer.cpp
//

#include <windows.h>
#include "DualServer.h"
#include "DualServer_i.c"

#include "Math.h"

DWORD       g_dwObjs = 0;
DWORD       g_dwLocks = 0;

STDAPI DllGetClassObject( REFCLSID rclsid, REFIID riid, void** ppv )
{
   HRESULT             hr;
   MathClassFactory    *pCF;

   // Make sure the CLSID is for our Expression component
   if ( rclsid != CLSID_Math )
      return( E_FAIL );

   pCF = new MathClassFactory;

   if ( pCF == NULL )
      return( E_OUTOFMEMORY );

   hr = pCF->QueryInterface( riid, ppv );

   if ( FAILED( hr ) )
   {
      delete pCF;
      *ppv = 0;
   }

   return hr;
}

STDAPI DllCanUnloadNow(void)
{
    if ( g_dwObjs || g_dwLocks )
       return( S_FALSE );
    else
       return( S_OK );
}