走出MFC子类化的迷宫

#ifndef _AFX_NO_OCC_SUPPORT

if (pParent->m_pCtrlCont != NULL)

{

// normal dialog control not found

COleControlSite* pSite = pParent->m_pCtrlCont->FindItem(nID);

if (pSite != NULL)

{

ASSERT(pSite->m_hWnd != NULL);

VERIFY(SubclassWindow(pSite->m_hWnd));

#ifndef _AFX_NO_OCC_SUPPORT

// If the control has reparented itself (e.g., invisible control),

// make sure that the CWnd gets properly wired to its control site.

if (pParent->m_hWnd != ::GetParent(pSite->m_hWnd))

AttachControlSite(pParent);

#endif //!_AFX_NO_OCC_SUPPORT

return TRUE;

}

}

#endif