Re: Express Spooler program

[GUDATH@EZINFO.VMSMAIL.ETHZ.CH (Bright Software)]

In <1993Aug3.193650.7583@aw101.iasl.ca.boeing.com> prl3546@aw101.iasl.ca.boeing.com writes:

> jimmys@bonnie.ics.uci.edu (Jimmy Shaw) writes:
> 
> >I have a question regarding Express by SevenHills, perhaps someone
> >who has the program could answer it (or does anyone from 7Hills
> >monitors c.s.a2?) 
> > As I understand it, Express takes the document to be printed and
> > generates a "picture" files.  _IF_ this is the case, then I suppose
> > a print preview option shouldn't be too difficult to implement.
> 
> As for the data necessary to impliment, yes, it would be available.
> As to it being easy to impliment, not so easy.  They would have to
> "build in" a simple paint program to preview with.

As far as I know, the data Express stores is not the "picture" data but the
printer sequence. Therefore it's pretty hard to implement a Preview option
because the data looks different for the same picture on different printers.
You'd need something like "reverse printer drivers" that translate the printer
codes back to the picture. Not that easy, really (think of a DW550C..sigh)...

cu

henrik

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