| 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 |
This may not be generally known, but there is a difference between the way you
can change your text foreground and background colors using ReGIS commands on
the VT240 and on the VT340; DECterm emulates the VT340. On the VT240 the
text background color is 0 and the text foreground color is 3, while on the
VT340 and DECterm the text background color is still 0 but the text foreground
color is 7. These colors are reversed if you've selected "Dark text, light
background", which is the default; in general the darker color is color 0.
(Actually it's a little more complicated than that for the VT340, but that's
another story).
To change your background to red and your foreground to yellow, assuming
you started with the default colors, use this DCL procedure:
$ esc[0,8] = 27
$ write sys$output esc, "Pps(m7(r)0(y))", esc, "\"
If you know a little about ReGIS you can also make this more general to
let you specify any ReGIS colors you like (consult a ReGIS manual), e.g.
$ esc[0,8] = 27
$ write sys$output esc, "Pps(m7(", p1, ")0(", p2, "))", esc, "\"
To get a red background and yellow foreground you'd say:
@change_colors r y
To get a salmon background and aquamarine foreground you'd say:
@change_colors H120L35S25 H260L65S60
Your colors will go back to their initial values if you select "Reset Terminal"
from the Commands menu.
-- Bob
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 533.1 | This is great... Is there a mapping between DECW$RGB_AQUAMARINE and 260,65,60? | 4933::CARSON | Knockwurst & Excommunications | Thu Jun 29 1989 16:20 | 7 |
If there is a function of the DECW$RGB_* logicals that maps to H,L,S that REGIS uses or are these totally unrelated numbers? - pete | |||||
| 533.2 | HANNAH::MESSENGER | Bob Messenger | Tue Jul 11 1989 02:24 | 9 | |
Re: .1 I got the HLS values for aquamarine etc. out of the VT330/VT340 Programmer Reference Manual. The DECW$RGB_Aquamarine logical gives RGB (red, green, blue) rather than HLS (hue, lightness, saturation), although you could specify the colors in RGB form if you used sixels instead of ReGIS. -- Bob | |||||
| 533.3 | Still ReGIS related problem... | KETJE::GHYOOT | Meetings are our most useless product | Tue Sep 05 1989 13:09 | 29 |
Re .0 I'm not familiar with ReGIS, so I was very interested in your explanation. Now, maybe you can help me along with the following problem. When calling All-in-1 with the command $ ALLIN1/TERMINAL=VT240 on a VAXstation 2000/GPX in terminal emulation (VT3xx emulation - DECterm ID), the result ranges from weird to disgusting, depending on the original color setup of the station. With respect to your explanation, this makes sense, since the All-in-1 activation with the above mentioned command seems to generate something like $ write sys$output esc,"PpS(E),esc,"\" ...in other words, Enter ReGIS, clear screen, and proceed on with this All-in-1 engine (I added the "leave ReGIS" for test purposes). This DCL command generates the kind of color mix you will run away from! ...trouble is, the Reset Terminal from the Commands menu doesn't reset the terminal at all!... Is this a bug in DECterm, or am I still missing something? Thanks, /Jean-Michel | |||||
| 533.4 | Clear and then reset | HANNAH::MESSENGER | Bob Messenger | Tue Sep 05 1989 21:55 | 12 |
Re: .3 You need to clear the display (e.g. with Clear Display from the Commands menu) and then Reset Terminal. In DECwindows V2, DECterm will emulate 4 colors by default on 4 plane systems. This means it usually won't have to create a private colormap, and it also means that the foreground and background colors and 0 and 3, as on a VT240, rather than 0 and 7. -- Bob | |||||