Size   pageDots;

Size  GetPagePixels() const { return native?pagePixels:pageDots; }
Size  GetPixelsPerInch() const { return native?nativeDpi:inchPixels; }

void Draw::LoadCaps() {
...
pageDots = pagePixels = GetSizeCaps(HORZRES, VERTRES);
...
}

...

void PrintDraw::InitPrinter()
{
...
pageDots.cx = 600 * pagePixels.cx / nativeDpi.cx; 
pageDots.cy = 600 * pagePixels.cy / nativeDpi.cy; 
...
}