#include <boost/intrusive_ptr.hpp> 
#include <atlbase.h> 
#include <iostream> 

void intrusive_ptr_add_ref(IDispatch *p) 
{ 
  p->AddRef(); 
} 

void intrusive_ptr_release(IDispatch *p) 
{ 
  p->Release(); 
} 

void check_windows_folder() 
{ 
  CLSID clsid; 
  CLSIDFromProgID(CComBSTR("Scripting.FileSystemObject"), &clsid); 
  void *p; 
  CoCreateInstance(clsid, 0, CLSCTX_INPROC_SERVER, __uuidof(IDispatch), &p); 
  boost::intrusive_ptr<IDispatch> disp(static_cast<IDispatch*>(p), false); 
  CComDispatchDriver dd(disp.get()); 
  CComVariant arg("C:\\Windows"); 
  CComVariant ret(false); 
  dd.Invoke1(CComBSTR("FolderExists"), &arg, &ret); 
  std::cout << (ret.boolVal != 0) << std::endl; 
} 

void main() 
{ 
  CoInitialize(0); 
  check_windows_folder(); 
  CoUninitialize(); 
}