| Title: | DECWINDOWS 26-JAN-89 to 29-NOV-90 |
| Notice: | See 1639.0 for VMS V5.3 kit; 2043.0 for 5.4 IFT kit |
| Moderator: | STAR::VATNE |
| Created: | Mon Oct 30 1989 |
| Last Modified: | Mon Dec 31 1990 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 3726 |
| Total number of notes: | 19516 |
A CMP has an application that needs to know what kind of monitor
(color or B/W) that it is running on. The application is done
in ReGIS and therefore does not make any calls to XLIB. Is
there a way to determine this WITHOUT making any X calls ??
How does the DECwindows server determine this ????
I posted this note in the VMS notesfile, and this is the response
I got:
Basically, you can't tell from the hardware what kind of monitor is
attached. You can make some guesses some of the time (e.g. if it's
an unaccelerated VS2000, then it can't be a colour monitor).
If you are running DECwindows, then I believe that there's n
enquiry routine which will tell you this information (DECwindows
gets the information in part from the hardware, and in part from
user setup information.
Thanks for any info....
+Joe Gabriel+
LDP::GABRIEL
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 366.1 | DECWIN::FISHER | Burns Fisher 381-1466, ZKO3-4/W23 | Fri Mar 10 1989 21:55 | 16 | |
You have to make an xlib call or two. It's not too hard to get it to
work 99.9% of the time, but it might be a little harder to get the last
.1%. That last .1% involves cases where I don't know exactly what goes
on, and probably hypothetical hardware and software. (In particular,
I am thinking of a server which has multiple visuals, some color and
some B/W where the terminal emulator chooses a visual which is not the
default.)
In the default case, what you would need to do is to use XOpenDisplay
to make a connection to the server, then XGetVisualInfo to find the
characteristics of the default visual.
Burns
| |||||
| 366.2 | VWSENG::KLEINSORGE | Toys 'R' Us | Sun Mar 12 1989 22:04 | 14 | |
Since it's a ReGIS application does it really need to know the monitor
type? With the proper use of the commands to set the colormap up
you should be able to write a program that works on both color and
intensity systems (that is, first send the monochromatic command
and follow it by the alternate color commands) if DECterm's logic
is right, this should work like magic.
If what you really mean is to find out if the workstation is a
*bitonal* (frame buffer) and *not* if the monitor is monochrome...
then I don't think that you can do this without making some kind
of Xlib calls or looking at server logical names (on VMS).
| |||||