static CHandleMap* afxMapHGDIOBJ(BOOL bCreate)
{
AFX_MODULE_THREAD_STATE* pState = AfxGetModuleThreadState();
if (pState->m_pmapHGDIOBJ == NULL && bCreate)
{
BOOL bEnable = AfxEnableMemoryTracking(FALSE);
#ifndef _AFX_PORTABLE
_PNH pnhOldHandler = AfxSetNewHandler(&AfxCriticalNewHandler);
#endif
pState->m_pmapHGDIOBJ = new CHandleMap(RUNTIME_CLASS(CGdiObject),
offsetof(CGdiObject, m_hObject));
#ifndef _AFX_PORTABLE
AfxSetNewHandler(pnhOldHandler);
#endif
AfxEnableMemoryTracking(bEnable);
}
return pState->m_pmapHGDIOBJ;
}
CHandleMap* PASCAL afxMapHDC(BOOL bCreate)
{
AFX_MODULE_THREAD_STATE* pState = AfxGetModuleThreadState();
if (pState->m_pmapHDC == NULL && bCreate)
{
BOOL bEnable = AfxEnableMemoryTracking(FALSE);
#ifndef _AFX_PORTABLE
_PNH pnhOldHandler = AfxSetNewHandler(&AfxCriticalNewHandler);
#endif
pState->m_pmapHDC = new CHandleMap(RUNTIME_CLASS(CDC),
ConstructDestruct<CDC>::Construct, ConstructDestruct<CDC>::Destruct,
offsetof(CDC, m_hDC), 2);
#ifndef _AFX_PORTABLE
AfxSetNewHandler(pnhOldHandler);
#endif
AfxEnableMemoryTracking(bEnable);
}
return pState->m_pmapHDC;
}
inline NoThrowNew() throw() { AfxSetNewHandler( &NoThrowNew::OutOfMemoryHandler ); }
CObject* CHandleMap::FromHandle(HANDLE h)
{
ASSERT(m_pClass != NULL);
ASSERT(m_nHandles == 1 || m_nHandles == 2);
if (h == NULL)
return NULL;
CObject* pObject = LookupPermanent(h);
if (pObject != NULL)
return pObject; // return permanent one
else if ((pObject = LookupTemporary(h)) != NULL)
{
HANDLE* ph = (HANDLE*)((BYTE*)pObject + m_nOffset);
ASSERT(ph[0] == h || ph[0] == NULL);
ph[0] = h;
if (m_nHandles == 2)
{
ASSERT(ph[1] == h || ph[1] == NULL);
ph[1] = h;
}
return pObject; // return current temporary one
}
// This handle wasn't created by us, so we must create a temporary
// C++ object to wrap it. We don't want the user to see this memory
// allocation, so we turn tracing off.
BOOL bEnable = AfxEnableMemoryTracking(FALSE);
#ifndef _AFX_PORTABLE
_PNH pnhOldHandler = AfxSetNewHandler(&AfxCriticalNewHandler);
#endif
CObject* pTemp = NULL;
TRY
{
pTemp = m_pClass->CreateObject();
if (pTemp == NULL)
AfxThrowMemoryException();
m_temporaryMap.SetAt((LPVOID)h, pTemp);
}
CATCH_ALL(e)
{
#ifndef _AFX_PORTABLE
AfxSetNewHandler(pnhOldHandler);
#endif
AfxEnableMemoryTracking(bEnable);
THROW_LAST();
}
END_CATCH_ALL
#ifndef _AFX_PORTABLE
AfxSetNewHandler(pnhOldHandler);
#endif
AfxEnableMemoryTracking(bEnable);
// now set the handle in the object
HANDLE* ph = (HANDLE*)((BYTE*)pTemp + m_nOffset); // after CObject
ph[0] = h;
if (m_nHandles == 2)
ph[1] = h;
return pTemp;
}
