Hello World - SDK sample

{
//...
//initialize COM
hr = CoInitialize(NULL);
if (FAILED (hr))
{
  MessageBoxW(NULL, L"Failed to initialize COM", L"novaPDF", MB_OK);
  return hr;
} 

// register the novapi2.dll COM module found in this executable's directory
hr = RegisterNovaCOM(TRUE); 

//create one NovaPdfOptions instance
INovaPdfOptions *pNova = 0;
hr = CoCreateInstance(__uuidof(NovaPdfOptions), NULL, CLSCTX_INPROC_SERVER, __uuidof(INovaPdfOptions), (LPVOID*) &pNova);
if (FAILED(hr))
{
  MessageBoxW(NULL, L"Failed to create novaPDF COM object", L"novaPDF", MB_OK);
  return hr;
}
DWORD dwSize = 256;
WCHAR strWorkStation[256]; 

//find out computer name
GetComputerNameW(strWorkStation, &dwSize); 

PrinterNameDlg dlg;
//construct printer name as "\\computer name\printer name"
dlg.m_strPrinterName.Format(L"\\\\%s\\%s", strWorkStation, PRINTER_NAME); 

//get printer name from user
if (IDCANCEL == dlg.DoModal())
{
  pNova->Release();
  CoUninitialize();
  return hr;
}
CString strPrinterName = dlg.m_strPrinterName; 

//initialize NovaPdfOptions and pass printer name
// if you have an application license for novaPDF SDK,
// pass both the registration name and the license key to the Initialize() function
// hr = pNova->Initialize((LPCWSTR)strPrinterName, L"<registration name>", L"<license key>");
hr = pNova->Initialize((LPCWSTR)strPrinterName, L"", L"", L"");
//...
} 

//Register novaPDF COM from novapi2.dll
//novapi2.dll should be in the same folder with the application
HRESULT RegisterNovaCOM(BOOL bRegister = TRUE)
{
HRESULT hr = E_FAIL;
WCHAR szFileName[_MAX_PATH] = L""; 

//find out application path and name
DWORD dwRes = GetModuleFileNameW(NULL, szFileName, _MAX_PATH); 

if (dwRes > 0 && dwRes < _MAX_PATH)
{
  WCHAR szDir[_MAX_PATH], szDrive[_MAX_DRIVE]; 

  //get application path
  _wsplitpath(szFileName, szDrive, szDir, NULL, NULL);
  wcscpy(szFileName, szDrive);
  wcscat(szFileName, szDir);
}

//add COM dll name
wcscat(szFileName, L"novapi5.dll"); 

//load COM dll
HMODULE hNova = LoadLibraryW(szFileName); 

typedef HRESULT (STDAPICALLTYPE *DllRegisterServerFunction)(void);
DllRegisterServerFunction fun = NULL;

if (hNova)
{
  if (bRegister)
  {
    //get the address of DllRegisterServer function
    fun = (DllRegisterServerFunction) GetProcAddress(hNova, "DllRegisterServer");
  }
  else
  {
    //get the address of DllUnregisterServer function
    fun = (DllRegisterServerFunction) GetProcAddress(hNova, "DllUnregisterServer");
  }
  if (fun)
  {
    // call DllRegisterServer (or DllUnregisterServer)
    hr = fun();
  }
}
return hr;
}