C / C++ / MFC

BOOL CWnd::DestroyWindow()
{
 if (m_hWnd == NULL)
   return FALSE;

 CHandleMap* pMap = afxMapHWND();
 ASSERT(pMap != NULL);
 CWnd* pWnd = (CWnd*)pMap->LookupPermanent(m_hWnd);
#ifdef _DEBUG
 HWND hWndOrig = m_hWnd;
#endif

#ifdef _AFX_NO_OCC_SUPPORT
 BOOL bResult = ::DestroyWindow(m_hWnd);
#else //_AFX_NO_OCC_SUPPORT
 BOOL bResult;
 if (m_pCtrlSite == NULL)
  bResult = ::DestroyWindow(m_hWnd);
 else
  bResult = m_pCtrlSite->DestroyControl();
#endif //_AFX_NO_OCC_SUPPORT
	
 // Note that 'this' may have been deleted at this point,
 //  (but only if pWnd != NULL)
 if (pWnd != NULL)
 {
  // Should have been detached by OnNcDestroy
#ifdef _DEBUG
  ASSERT(pMap->LookupPermanent(hWndOrig) == NULL);// <big>HERE IT FAILED</big>
#endif
 }
 else
 {
#ifdef _DEBUG
  ASSERT(m_hWnd == hWndOrig);
#endif
  // Detach after DestroyWindow called just in case
  Detach();
 }
 return bResult;
}