Experimental Physics and
Industrial Control System

Andrew Johnson <[email protected]> · Thu, 22 Feb 1996 17:56:10 +0000 (GMT)

On Thu, 22 Feb 96 several people responded to my suggestion:

>> >IMHO there should be a way of being able to put _something_ on a display which 
>> >tells you without having to move a mouse whether you have write access to a 
>> >system.

If Deb can somehow incorporate access security into the edd/dm colour rules, 
display screen designers can do whatever they like:
  * Coloured bounding box?  Put a filled rectangle behind the control with 
    a rule controlling the rectangle colour.
  * Dashed?  Make the rectangle un-filled and dashed.
  * A cross over the top?  Do something similar with lines.
  * Controller itself should change colour?  Easy.
  * Text to tell you about your rights? ...
  * No indication other than mouse cursor?  Don't use A.S. in the colour rule.

This then becomes a tool rather than an enforced method which some people might 
disagree with.

- Andrew

  O o ._    Andrew Johnson, Royal Greenwich Observatory
     __\\_      Madingley Road, Cambridge, CB3 0EZ
  __|ooooo|__   Tel +44 (0)1223 374823  Fax 374700
~~\_________/~~	WWW http://www.ast.cam.ac.uk/~anj/

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System