// Error handler
bool Failed(HRESULT aResult, int errNr) {
	if (FAILED(aResult)) {
		LPTSTR buffer;
		FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM, nullptr, (DWORD)aResult, LANG_USER_DEFAULT, (LPTSTR)&buffer, 0, nullptr);

		MessageBox(0, buffer, _T("Fatal error: Err nr. #"+errNr), MB_OK | MB_ICONERROR);
		LocalFree(buffer);

		releaseInterfaces();
		return true;
	}
	return false;
}