소리 바다의 파도 플레이어는여 form안에 directx를 띄운거 같은데요
ddrval =  DirectDrawCreate(NULL, &lpDD, NULL);
  if(ddrval == DD_OK)
  {
    // Get exclusive mode
    ddrval = lpDD->SetCooperativeLevel(Handle,
      DDSCL_NORMAL );
    if(ddrval == DD_OK)
    {
//      ddrval = lpDD->SetDisplayMode(640, 480, 8);
      if(ddrval == DD_OK)
      {
        // Create the primary surface with 1 back buffer
        ddsd.dwSize = sizeof(ddsd);
        ddsd.dwFlags = DDSD_CAPS | DDSD_BACKBUFFERCOUNT;
        ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE |
                              DDSCAPS_FLIP |
                              DDSCAPS_COMPLEX;           
        ddsd.dwBackBufferCount = 1;
        ddrval = lpDD->CreateSurface(&ddsd, &lpDDSPrimary, NULL); //여기서 어떻게하면 되는거 같은데
        if(ddrval == DD_OK)
        {
          // Get a pointer to the back buffer
          ddscaps.dwCaps = DDSCAPS_BACKBUFFER;
          ddrval = lpDDSPrimary->GetAttachedSurface(&ddscaps,
                                                &lpDDSBack);
          if(ddrval == DD_OK)
          {
            // draw some text.
            if (lpDDSPrimary->GetDC(&DC) == DD_OK)
            {
                    ................
            }

            if (lpDDSBack->GetDC(&DC) == DD_OK)
            {
                  ..................
            }
}

ddrval = lpDD->CreateSurface(&ddsd, &lpDDSPrimary, NULL)
에서요 ddsd의 설정을 어떻게 하면 되나요?