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78
 SYSTEMS SCIENCE
777
				       1860 Embarcadero	Rd.,
				       Suite 260
8				       Palo Alto, CA 94303
8					    Tel: (415)	812-
					    1800
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		      APPLICATION NOTE

     Using SSI graphic packages	with Sun's OpenWindows



Systems	 Science's  graphics  packages,	 Magellan,  SimWave,
Tsunami,  and  XPlus,  can  operate  on	 any  system with X-
Windows,  including  systems   running	 Sun's	 OpenWindows
software. However, OpenWindows has a problem which can seri-
ously disrupt their operation.	The following describes	 the
problem	and the	recommended work around.

The OPEN LOOK Window  Manager,	"olwm",	 sets  the  keyboard
focus  in  one	of  two	 manners:  "click  select"  or "move
pointer".  The "click select" mode has	a  serious  problem.
Using the SSI graphics packages	with the "click	select"	mode
can  cause  the	 OpenWindows  environment  to  freeze.	 The
OpenWindows  environment can only be unfrozen by killing the
"olwm" process.	 Therefore, we recommend running OpenWindows
with "move pointer" rather than	"click select".


The following describes	how to run  OpenWindows	 with  "move
pointer" mode:


1.)   Popup the	OpenWindows' root menu by moving  the  mouse
     to	 a portion of the screen not covered by	a window and
     pressing the right	mouse button.


2.)   Select the Properties item from the  OpenWindows	root
     menu.


3.)   Select the Miscellaneous category	 in  the  Properties
     editor.


4.)   Change the "Set Input Area" field	to "Move Pointer".


5.)   Hit the "Apply" button to	save the changes.




		     February 25, 1993





			   - 2 -


Note, SimWave (2.3B and	earlier) and XPlus (4.5	and earlier)
were  affected	by  an	OpenWindows  problem which prevented
users from typing into SimWave	and  XPlus  pop-up  windows.
SSI  has  worked  around  this	problem.  Newer	 versions of
SimWave	and XPlus allow	users to type directly	into  pop-up
windows.

Note, SimWave (2.3G and	earlier), XPlus	(5.0a and  earlier),
and Magellan (1.0A) required users to run the "xhost +"	com-
mand even when displaying graphics locally.  This  has	been
fixed.

Note, SimWave (2.3G and	earlier), XPlus	(5.0a and  earlier),
and  Magellan (1.0B and	earlier) would continue	to run after
the "quit" item	had been selected from the frame  menu	pro-
vided by the OPEN LOOK Window Manager. After the "quit"	item
had been selected, the window would be	destroyed,  but	 the
associated  process  continued	to  run	 and  consume system
resources.  This has been fixed.






































		     February 25, 1993


