checkmodes.cpp

      D3DDISPLAYMODEEX mode;
      mode.Size             = sizeof(D3DDISPLAYMODEEX);
      mode.Width            = devMode.dmPelsWidth;
      mode.Height           = devMode.dmPelsHeight;
      mode.RefreshRate      = 0;
      mode.Format           = static_cast<D3DFORMAT>(Format);
      mode.ScanLineOrdering = D3DSCANLINEORDERING_UNKNOWN;

      if (devMode.dmFields & DM_DISPLAYFLAGS) {
        mode.ScanLineOrdering = (devMode.dmDisplayFlags & DM_INTERLACED)
          ? D3DSCANLINEORDERING_INTERLACED
          : D3DSCANLINEORDERING_PROGRESSIVE;
      }

      if (devMode.dmFields & DM_DISPLAYFREQUENCY)
        mode.RefreshRate = devMode.dmDisplayFrequency;