OLE调用EXCEL的应用程序关闭后，我的EXCEL和应用程序本身都退不出去

Question

我是用class CMyOleItem : public COleDocObjectItem继承一个类；
然后
m_pExcelItem = new CMyOleItem(pDoc);
CLSID clsid;
if(FAILED(::CLSIDFromProgID(L"Excel.sheet",&clsid)))
AfxThrowMemoryException();
if(!m_pExcelItem->CreateNewItem(clsid))
                           AfxThrowMemoryException();

Answer 1

HWND hWnd; do
{ 
hWnd = ::FindWindow(NULL,"你程序的TITLE");
      if(hWnd!=NULL)
::SendMessage(hWnd, WM_CLOSE, 0L, 0L);
hWnd = NULL;
}while(hWnd!=NULL);