DirectShow Programming 02 скачать в хорошем качестве

DirectShow Programming 02

In this lesson, we continue discussing the notion of a graph of software components. In the code, we add the CoInitialize function call. We also add a ThrowIfError function that will throw exceptions if any of our calls fails. Here is a bit of the code: hr = CoInitialize(NULL); void ThrowIfError(HRESULT hr) { if (FAILED(hr)) { TCHAR szErr[MAX_ERROR_TEXT_LEN]; DWORD res = AMGetErrorText(hr, szErr, MAX_ERROR_TEXT_LEN); if (res == 0) { StringCchPrintf(szErr, MAX_ERROR_TEXT_LEN, TEXT(-Unknown Error: 0x%2x-), hr); } throw szErr; } }