There are 3 modes provided: Basic, Enhanced, GUI Enhanced
Basic mode provides normal screen presentation. No extras are provided.
This describes most of the emulators that I have used or downloaded
and tried. Also; the tn5250 for linux falls in this category as well
(Please; this is no slight on this emulator just an example for me to
use without naming names. I used it until I started this project).
Enhanced mode provides other functions like cursor progression, windows,
continued edit fields, edit masked fields, etc... This is where Client Access
falls in (and more).
The GUI part comes in by manipulating the 5250 stream and painting the
fields like gui constructs in windowing systems, gui looking popup
windows in place of windows, painting the PF keys on the screen as buttons
(hot spots) so when clicked it will send the appropriate aid key, as well
as the enhanced functions described above. (See screen shots) This is
basic gui enhancements that you can receive and interpret from the 5250
stream. At this time that is all tn5250j does. Maybe in the future it
will become more advanced if and when I have the time (or I have help I
do have a job).
There is a great article on systems that provide more enhanced/advanced
green screen make over functions on the news400 site.
Other features provided are:
Non displayable characters -
A lot of the emulators that I used would stop responding if there
was data that could not be displayed on the screen. An example would be
a query on a file that had variable length fields (we have a lot here).
The data that gets displayed will have all sorts of information embedded
in it that looks like 5250 stream commands. When Client Access, Extra or
tn5250j receives these invalid characters it notifys the AS400 and the
AS400 corrects it and sends the information back in a displayable format
(pretty cool on the AS400 controllers part). As a developer of AS400
applications you really need to be able to look at these files and I have
spent a lot of time and code in making tn5250j make these checks. It is
very annoying to use an emulator that will not do this (not to mention time
consuming to switch to another emulator just to look at this type of
information). (See screen shots)
Character counter -
A character counter is provided. As a developer I was always counting
characters on the screen one by one. I guess that is why my vision is so
bad. So I added a character counter. When you select a bounded area for copy
it will display the rows and columns of the bounded area (you have to press
the right mouse button to get the information).
Hot spots -
Hot spots for the function keys like other emulators that I have seen.
In the future I hope to expand on this. More to come I hope.
Message Wait Notification -
A lot of developers use the message wait notification to be notified
when a job terminates. Instead of using the *BREAK for message notification
which interrupts the screen there is a MW at the bottom of the screen that
lets them know without interrupting their sleeping woops i mean thinking
process. I know this sounds basic but I have seen emulators without this
Key Shortcuts: -
A lot of the functions provided have short cut key sequencing to do
the same. There are a lot of programmers out there that do not like to
touch the mouse (I guess we are getting fewer but maybe that is where the
linux users come in).
Attribute settings for screen/session -
This is given on all emulators that I have tried. Just thought I
would list it here. Although at this time tn5250j does not allow you
to change the default key bindings. Nobody has requested it so for
me it has not been given high priority. Where I work the developers
all use pretty much the same key bindings. The users using the emulator
seem to not care as long as it works and they can: do their job and change
the colors for different sessions to different systems. This allows them
to work on the different systems (we have 4 different systems with 4 different
languages: English, French (Luxembourg;France), Portuguese, Spanish, German
is also spoken but we have no systems that need to display the German character
sets) and the colors allow them to visually distinguish the systems.
I hope to see more languages from you. Let me know and I will put them in.
File transfer from host -
You can export files from the host in different formats. See file
transfer section for more information
With release 0.5.5 you can now write scripts using the python language.
This uses the wonderful project code at http://www.jython.org. See scripting
Spool file export -
With release 0.5.5 you can now export spool files from the host into PDF or