[racket] printer-dc% and printer dialog

It looks like the behavior changed when we rewrote `racket/gui' ---
probably not intentionally, but I'm not sure.

Since the behavior changed a while ago, I'm inclined to keep the new
behavior, which is that simply creating a `printer-dc%' doesn't show
the setup dialog. Instead, call `get-page-setup-from-user' to show the
print dialog.

The documentation for `can-get-page-setup-from-user?' is also out of
date. A page-setup dialog is available on all platforms.

At Sat, 17 Nov 2012 00:57:25 +0100, "Nikolaus Klepp" wrote:
> Hi all!
> 
> I would like to get a printer dialog. The docs say, "When a printer-dc% object 
> is created, the user gets platform-specific modal dialogs for configuring the 
> output."
> 
> Now, when I try it:
> 
> (new printer-dc%)
> 
> I get a dc back, but no dialog appears. What am I doing wrong?
> 
> Nik
> 
> 
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