| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 3255.1 | | PCBUOA::BAYJ | Jim, Portables | Mon May 12 1997 14:43 | 23 |
| If the emulator identifies itself as a specific terminal, like a 300 or
400 series, then theoretically you can't. That is, the OS is supposed
to believe the id string, and an emulator will typically send the id
string exactly as the terminal would send it, because applications that
depend on a specific terminal type might break if the id string is not
correct.
That said, the VT series had many different attribute return functions
that might be helpful for "guessing" what device you are talking to.
For example, a VT 400 series has a certain number of video page memory
available. Most terminal emulators don't limit you to the physical
amount that a terminal actually has. By querying the terminal using
one of the advanced characteristic calls, you might be able to find out
the amount of video memory, and guess its a terminal emulator.
Its a real catch-22. A good emulator won't give away that its not a
terminal. In order to really identifiy itself, a non-standard method
has to be set up, which makes the emulator no longer appear to be an
exact duplicate of the terminal its emulating.
jeb
|
| 3255.2 | | JAMIN::OSMAN | Eric Osman, dtn 226-7122 | Mon May 12 1997 15:28 | 7 |
|
Given that a hotsy totsy emulator won't give itself away, it might
be interesting to ask you back why your program wants to know whether
it's running on an emulator or not.
When YOU answer that question, maybe it will give a clue as to what you
can do instead of asking whether the program is on an emulator or not.
|
| 3255.3 | ReGIS mouse flakiness | PATE::COTE | Dave Cote, Hudson,MA.USA dtn 225-4166 | Mon May 12 1997 17:06 | 10 |
| Thanks for the quick responses!
I have a program that was written several years ago using the
ReGIS mouse on the VT3xxs to select items on screen.
Now, some of those VTs are being replaced with windows
systems, e.g. VXT's, satellites and PCs
and I can't get the mouse to work transparently across
VT & windows platforms, so ...
if I can differentiate I'll just make the switch internally. Dave
|
| 3255.4 | Flaky mouse details | PATE::COTE | Dave Cote, Hudson,MA.USA dtn 225-4166 | Tue May 13 1997 09:36 | 10 |
| Here's a little more info on what I meant by mouse flakiness.
The program fills the screen with part numbers and the VT user can just
select them by clicking on them.
When the same program is run here on my PC through Xcursion
via a terminal window to the VAX, the XY coordinates returned
by the mouse are slightly skewed. The further I go from the
0,0 origin, i.e. the further right and down, the further off
the coords are so that clicking on one entry actually selects
the one above or to the left of it.
|
| 3255.5 | | JAMIN::OSMAN | Eric Osman, dtn 226-7122 | Tue May 13 1997 11:25 | 5 |
|
That doesn't sound good. Maybe the font size of the emulator is confusing
the mouse coordinates ? What happens if you try a larger or smaller font ?
/Eric
|
| 3255.6 | Using ReGIS to output text worked | PATE::COTE | Dave Cote, Hudson,MA.USA dtn 225-4166 | Fri May 16 1997 15:22 | 10 |
| Thanks for pointing me in the right direction.
What I didn't realize was that the text
written to screen was not as ReGIS text. When I changed it to
send it out using ReGIS, i.e. T(..)"text...", then everything
fell into place. Now the mouse cursor seems to line up with the
text consistently across platforms (the 2 I've tried so far).
For now I can live without knowing if I'm on a VT vs an emulator.
Thanks, Dave
|