mfc中的异步方法调用

我想调用一个函数Recurse（LPCTSTR pstr）来扫描文件，同时又想做另一个任务但是当我点击Resume Button时我必须等到整个扫描结束。



我该怎么办...



我尝试了什么：

I wanted to call a function Recurse(LPCTSTR pstr) to scan files and at the same time wanted to do another task but when I'm clicking on Resume Button I have to wait Until whole scanning finished.

what should I do...

What I have tried:

void CPracticePictureControlandlabelsDlg::OnBnClickedResume()
{
	// TODO: Add your control notification handler code here
	Recurse(L"E:\\");
}

void CPracticePictureControlandlabelsDlg::Recurse(LPCTSTR pstr)
{
	m_picProgressGif.Draw();
	m_picMyimg.Draw();
   CFileFind finder;

   // build a string with wildcards
   CString strWildcard(pstr);
   strWildcard += _T("\\*.*");

   // start working for files
   BOOL bWorking = finder.FindFile(strWildcard);

   while (bWorking)
   {
      bWorking = finder.FindNextFile();

      // skip . and .. files; otherwise, we'd
      // recur infinitely!

      if (finder.IsDots())
         continue;

      // if it's a directory, recursively search it

      if (finder.IsDirectory())
      {
         CString str = finder.GetFilePath();			 
		 m_lblMessage.SetText(str);
		 
         Recurse(str);
      }
   }

   finder.Close();
}