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From: wrv@balr.com (Bill Vogel)
Newsgroups: comp.windows.x
Subject: xview -> NeWs
Message-ID: <1990Nov19.054303.26516@balr.com>
Date: 19 Nov 90 05:43:03 GMT
Organization: BALR Corporation
Lines: 38

I am using the OpenWindows Developers Guide to create a graphical
user interface, but I want to use postscript (NeWS) to do the
graphics work on the main drawing canvas.  How do you do it?
The devguide lets you select postscript as the imaging model for
the canvas, but I can't find any doc. on how to do this.  I know
how to open a connection to the NeWS side, but I don't know how
to send down the canvas id.

The repaint procedure (generated by devguide) looks like this:
void
repaint_graphics(pscanvas, newstoken, display, xid, rects)
        PScanvas        pscanvas;
        NeWStoken       newstoken;
        Display         *display;
        Window          xid;
        Xv_xrectlist    *rects;
{
        gmain_main_window_objects       *ip = (gmain_main_window_objects
*) xv_get(pscanvas, XV_KEY_DATA, INSTANCE);
        
        xv_set(pscanvas, PSCANVAS_CLIPRECTS, rects);
        pscanvas_flip();
        
        fprintf(stderr, "gmain: repaint_graphics\n");
}

I can't find any documentation on pscanvas_flip() which is really a cps
macro defined in pscan_ps.h.  There seem to be many useful calls
here, but there's no documentation.  Also, the canvas is created
as a PSCANVAS object, which I also can't find any documentation on,
although I've looked through the Devguide manual, the Vol 7 O'Reilly
manual, the openwindows Version 2: converting.... manual, and NeWS
manual.  The only place I haven't looked is the OpenLook Toolkit
Intrinsics manual.

Any help is much appreciated!

Bill Vogel