itp does not create a gui window to display graphical output

[GoogleCodeExporter]

What steps will reproduce the problem?
1. make, make install
2. itp
3. no graphics window

What is the expected output? What do you see instead?

As a postscript interpreter, Xpost will be used to preview postscript graphics 
and documents. It should open a Window and display graphical output either 
after `showpage` or after all painting operators.

Please use labels and text to provide additional information.

Original issue reported on code.google.com by luser.droog on 28 Oct 2013 at 8:50

[GoogleCodeExporter]

itp or itp foo.ps (the latter opening directly the postscript file)

but should the interpreter and the gui have the same name ?

also, should we use low level API or a toolkit ?

think about NeWs : http://en.wikipedia.org/wiki/NeWS

Original comment by vincent....@gmail.com on 29 Oct 2013 at 5:55

[GoogleCodeExporter]

NeWS 2.1 manual is available online:
http://manx.classiccmp.org/search.php?cp=26&q=

Original comment by luser.droog on 29 Oct 2013 at 6:01

[GoogleCodeExporter]

We've implemented gui devices for Windows and X. The default device is 
activated in response to the 'loadgraphics' procedure.

Original comment by luser.droog on 21 Nov 2013 at 11:54

• Changed state: Started

[GoogleCodeExporter]

With the event handlers and color conversions, the gui output seems to work 
acceptably. Speed issues are tentatively attributed to the postscript 
implementation of graphics operators, and excessive memory allocation.

Original comment by luser.droog on 26 Nov 2013 at 11:00

• Changed state: Fixed