A brief introduction to the XPA messaging system, which provides seamless communication between all kinds of Unix event-driven programs, including X programs, Tcl/Tk programs, and Perl programs. ... A program becomes an XPA-enabled server by defining named points of public access through which data and commands can be exchanged with other client programs (and users). ... An XPA name server program, xpans, through which XPA access point names are registered by servers and distributed to clients. ...

... The XPA messaging system provides seamless communication between many kinds of Unix programs, including X programs and Tcl/Tk programs. It also provides an easy way for users to communicate with XPA-enabled programs by executing XPA client commands in the shell or by utilizing such commands in scripts. ... A program becomes an XPA-enabled server by defining named points of public access through which data and commands can be exchanged with other client programs (and users). ...

... Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX, U.K. љ This paper describes how Tcl and the Tk toolkit have been extended to send and receive Adam inter-task messages, and how it has been used to build graphically-oriented user interfaces for various data reduction tasks. ... The user interface uses the message system to control the task. ... adam_init . ... The user interface sends messages to the relay task using the Adam message system, which forwards them to the Adam tasks. ...

Next: Summary Up: Design Previous: Logical View . The screen design is part of the user interface development, and is a result of the storyboarding described in Section . ... This provides a good overview of how the user interface development had to be broken down to meet the design requirements. The Menu Bar is located at the top of the screen, and provides access to several functions available throughout the design session. ... The Palette of Objects is located in the upper right. ...

ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Staff list | ... Email discussion lists . ... Australia Telescope Online Archive (ATOA) . ... Arch | ... Duchamp . ... CSIRO ATNF Data Archives . ... http://www.atnf.csiro.au/people/Matthew.Whiting/Duchamp . ... http://svn.atnf.csiro.au/trac/duchamp/newticket . ... This email is sent partly to the duchamp-users exploder, and partly to my own list of people who've been in touch with me in the past about Duchamp. ...