nanogui: Thread: GrSetGCForeground

Hello,

What can be the reason that after GrSetGCForeground (gc, RED); in HelloWorld Demo from "Getting Started" the text shows up as Black on White?

Thank you,
Leah.

> What can be the reason that after GrSetGCForeground (gc, RED); in
> HelloWorld Demo from "Getting Started" the text shows up as Black on
> White?

Hmmm, I don't know... 
Do any other colors work? Try LTRED, LTBLUE, LTGREEN. 

Does the line:
  #define MWINCLUDECOLORS
preceed the line:
  #include "microwin/nano-X.h"

You could try to specify the color directly this way:
  GrSetGCForeground (gc, MWRGB(128,0,0));
(but that really should not make any difference)

What type of display are you using?


Gary James
####@####.####
http://home.twcny.rr.com/embedded/

> > What can be the reason that after GrSetGCForeground (gc, RED); in
> > HelloWorld Demo from "Getting Started" the text shows up as Black on
> > White?

> Hmmm, I don't know... 
> Do any other colors work? Try LTRED, LTBLUE, LTGREEN. 

No, everything shows up as black on white.

> Does the line:
>   #define MWINCLUDECOLORS
> preceed the line:
>   #include "microwin/nano-X.h"

Yes.

> You could try to specify the color directly this way:
>   GrSetGCForeground (gc, MWRGB(128,0,0));
> (but that really should not make any difference)

Tried. Indeed - any difference.

> What type of display are you using?

What do you mean here exactly?


Thanks, 
Leah.

On Thu, 31 May 2001, Leah Burstein wrote:
> No, everything shows up as black on white.

What colour depth are you running the framebuffer in? Do colours work in
text mode applications on the same framebuffer console?

-- 
------- Alex Holden -------
http://www.linuxhacker.org/
 http://www.robogeeks.org/

It took some time to figure out about display...
The server prints:
Visual Class: True Color(4)
depth: 8
bits_per_rgb:8
map_entries: 8
Colormap: 0x21

We could get some (random) colors, but not with RGB, only straightly sending
hexa values. And we could not figure the pattern. For example, some kind of
 red = 17a6b0, yellow = 3f52f0, green = 794eb0, blue = c1c960. White is
ffffff, as expected. What do you think?

Thanks, Leah.


----- Original Message -----
From: Gary James ####@####.####
To: Leah Burstein ####@####.####
Cc: NanoGui ####@####.####
Sent: Tuesday, May 29, 2001 7:00 PM
Subject: Re: [nanogui] GrSetGCForeground


> > What can be the reason that after GrSetGCForeground (gc, RED); in
> > HelloWorld Demo from "Getting Started" the text shows up as Black on
> > White?
>
> Hmmm, I don't know...
> Do any other colors work? Try LTRED, LTBLUE, LTGREEN.
>
> Does the line:
>   #define MWINCLUDECOLORS
> preceed the line:
>   #include "microwin/nano-X.h"
>
> You could try to specify the color directly this way:
>   GrSetGCForeground (gc, MWRGB(128,0,0));
> (but that really should not make any difference)
>
> What type of display are you using?
>
>
> Gary James
> ####@####.####
> http://home.twcny.rr.com/embedded/
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: ####@####.####
> For additional commands, e-mail: ####@####.####
>
>

The problem solved... All works. The colors looked odd only through vnc.

Thanks.

----- Original Message -----
From: Leah Burstein ####@####.####
To: Alex Holden ####@####.#### Gary James ####@####.####
Cc: NanoGui ####@####.####
Sent: Thursday, June 07, 2001 12:58 PM
Subject: Re: [nanogui] GrSetGCForeground


> It took some time to figure out about display...
> The server prints:
> Visual Class: True Color(4)
> depth: 8
> bits_per_rgb:8
> map_entries: 8
> Colormap: 0x21
>
> We could get some (random) colors, but not with RGB, only straightly
sending
> hexa values. And we could not figure the pattern. For example, some kind
of
>  red = 17a6b0, yellow = 3f52f0, green = 794eb0, blue = c1c960. White is
> ffffff, as expected. What do you think?
>
> Thanks, Leah.
>
>
> ----- Original Message -----
> From: Gary James ####@####.####
> To: Leah Burstein ####@####.####
> Cc: NanoGui ####@####.####
> Sent: Tuesday, May 29, 2001 7:00 PM
> Subject: Re: [nanogui] GrSetGCForeground
>
>
> > > What can be the reason that after GrSetGCForeground (gc, RED); in
> > > HelloWorld Demo from "Getting Started" the text shows up as Black on
> > > White?
> >
> > Hmmm, I don't know...
> > Do any other colors work? Try LTRED, LTBLUE, LTGREEN.
> >
> > Does the line:
> >   #define MWINCLUDECOLORS
> > preceed the line:
> >   #include "microwin/nano-X.h"
> >
> > You could try to specify the color directly this way:
> >   GrSetGCForeground (gc, MWRGB(128,0,0));
> > (but that really should not make any difference)
> >
> > What type of display are you using?
> >
> >
> > Gary James
> > ####@####.####
> > http://home.twcny.rr.com/embedded/
> >
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: ####@####.####
> > For additional commands, e-mail: ####@####.####
> >
> >
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: ####@####.####
> For additional commands, e-mail: ####@####.####
>
>