我可以在 MFC 中有多个 GUI 线程吗?

I have a large MFC based application that includes some potentially very slow tasks in the main thread. This can give the appearance that the application has hung when it is actually working its way through a long task. From a usability point of view, I'd like to be giving the user some more feedback on progress, and have an option to abort the task in a clean manner. While hiving the long tasks off into separate threads would be a better long term solution, I'm thinking a pragmatic short term solution is create a new GUI thread encapsulated in its own object complete with dialog including progress bar and cancel button, used in a similar manner to a CWait object. The main thread monitors the cancel status via an IsCancelled method, and finishes via a throw when required.

这是一种合理的方法吗?如果是的话，是否已经有一些 MFC 代码可供我使用，或者我应该自己开发吗?第一张草图是这样的

class CProgressThread : public CWinThread
{
public:
    CProgressThread(int ProgressMax);      
    ~CProgressThread()
    void SetProgress(int Progress);
    BOOL IsCancelled();
private:
   CProgressDialog  *theDialog;
}

void MySlowTask()
{
   CProgressThread PT(MaxProgress);
   try
   {
       {
           {  // deep in the depths of my slow task
              PT.SetProgress(Progress);
              if (PT.IsCancelled())
                 throw new CUserHasHadEnough; 
           }
        }
    }
    catch (CUserHasHadEnough *pUserHasHadEnough)
    {
        // Clean-up
    }
}