I perfectly agree - it is not supposed to work at all. I don’t understand why is working. Anyway, if you will take a look at the example in MSDN you'll see that the output is perfect ( compiled debug, I suppose ), even if the note says "MEMCPY.C: Illustrate overlapping copy: memmove, handles it correctly; memcpy does not" ;P

solon wrote: //updated code HDC hMemDC = ::CreateCompatibleDC( hDC); After you create the MemDC, you will have a monchromatic bitmap with 1 pixel selected into that memdc. What you need to do now is to create a bitmap that has the proper height, width and color depth to match the Window DC that you want to paint to. In order to do this you should use some code similar to this: // Get the dimensions of the client window. RECT rClient; ::GetClientRect(hWnd, &rClient); // Create the compatible bitmap to the window DC with the proper dimensions. HBITMAP hBmp = ::CreateCompatibleBitmap(hDC, rClient.right, rClient.bottom); // Select this new bitmap into the MemDC. (HBITMAP)::SelectObject(hMemDC, hBmp); Now you can continue with the code that you have previously written. solon wrote: ::StretchDBIits( hMemDc, /* ... */); ::BitBlt( hDC, /* ... */, hMemDC, /* ... /-*/); //!? Finally in order to cleanup, you must do things in this order. ::DeleteDC(hMemDC); ::DeleteObject(hBmp);

So STL has global objects ? (besides cin,cout and cerr ). Because I don't have any global objects ( that's my concern - the fstream object is created on the stack , so it's destroyed before I call _CrtDumpMemoryLeaks) . If it has, do you have any idea, are these objects thread safe ? And can you name some ?

Try the following if all three classes are defined in one *.H file. // forward declaration class c; class A { friend class C; /// }; class B { /// class C { /// }; }; Otherwise, declare all three separately, and include C as the member of B.

Hi, First of all you should use the SysReAllocString instead of SysAllocString. It's not the source of the problem but it's a correct way of doing things. Before assigning a new value to the pointer you must free the data it's pointing to. STDMETHODIMP CTest::get_Path(BSTR *pVal) { if(pVal == NULL) return E_POINTER; if(!SysReAllocString(pVal, m_bstrPath)) return E_OUTOFMEMORY; return S_OK; } Your problem is that in VBScript and JScript cannot pass parameters by reference to automation properties or methods. Use return values of properties and methods to return a value instead of using byref parameters for this purpose. This approach limits you to one return value. Regards, Alex Gorev, Dundas Software.