CComObjectThreadModel

#if defined( _ATL_SINGLE_THREADED )
   typedef CComSingleThreadModel CComObjectThreadModel;

#elif defined( _ATL_APARTMENT_THREADED )
   typedef CComSingleThreadModel CComObjectThreadModel;

#else
   typedef CComMultiThreadModel CComObjectThreadModel;

#endif

Depending on the threading model used by your application, the typedef name CComObjectThreadModel references either CComSingleThreadModel or CComMultiThreadModel. These classes provide additional typedef names to reference a critical section class.

Note   CComObjectThreadModel does not reference class CComMultiThreadModelNoCS.

Using CComObjectThreadModel frees you from specifying a particular threading model class. Regardless of the threading model being used, the appropriate methods will be called.

In addition to CComObjectThreadModel, ATL provides the typedef name CComGlobalsThreadModel. The class referenced by each typedef depends on the threading model used, as shown in the following table:

S=CComSingleThreadModel; M=CComMultiThreadModel

Use CComObjectThreadModel within a single object class. Use CComGlobalsThreadModel in an object that is either globally available to your program, or when you wish to protect module resources across multiple threads.

#include <atlbase.h>

See Also   CComObjectRootEx