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Groups > alt.os.linux > #57273

Re: reading / writing the color of an absolute pixel (x,y) of the physical screen

From "F. Russell" <frussell@random.info>
Newsgroups alt.os.linux
Subject Re: reading / writing the color of an absolute pixel (x,y) of the physical screen
Date 2019-06-26 12:15 +0000
Organization NewsGuy.com
Message-ID <qevnli036h@news2.newsguy.com> (permalink)
References <qetg1o$euc$1@dont-email.me> <qetvbs$fvj$1@dont-email.me> <qeu9rb$72a$1@dont-email.me> <qevas802449@news1.newsguy.com> <qevhdt$o4u$1@dont-email.me>

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On Wed, 26 Jun 2019 12:29:16 +0200, Soviet_Mario write:

> 
> Sometimes, instead of taking a screenshot of another program 
> showing some graphical content (even text well formatted), 
> save it to a file, locate and open the file in my program, 
> I'd like to go the short way and capturing the rectangle 
> directly from the screen.
>

I don't see why, but you need xlib:

https://tronche.com/gui/x/xlib/graphics/XGetImage.html

https://tronche.com/gui/x/xlib/utilities/XGetPixel.html


> 
> My wheel was just invented, I just need to recode it for 
> another environment (I'm getting bored to use virtual 
> machines except from very irreplicable situations), as I 
> just have visual basic programs and the base logic was 
> enough.

Please provide a specific example of what you are attempting
to accomplish.

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Thread

reading / writing the color of an absolute pixel (x,y) of the physical screen Soviet_Mario <SovietMario@CCCP.MIR> - 2019-06-25 17:53 +0200
  Re: reading / writing the color of an absolute pixel (x,y) of the physical screen Alfonso P Cutaway <dweed54@gmail.com> - 2019-06-25 16:01 +0000
    Re: reading / writing the color of an absolute pixel (x,y) of the physical screen "R.Wieser" <address@not.available> - 2019-06-25 19:03 +0200
      Re: reading / writing the color of an absolute pixel (x,y) of the physical screen Alfonso P Cutaway <dweed54@gmail.com> - 2019-06-25 18:08 +0000
        Re: reading / writing the color of an absolute pixel (x,y) of the physical screen "R.Wieser" <address@not.available> - 2019-06-25 21:44 +0200
          Re: reading / writing the color of an absolute pixel (x,y) of the physical screen Alfonso P Cutaway <dweed54@gmail.com> - 2019-06-26 00:37 +0000
            Re: reading / writing the color of an absolute pixel (x,y) of the physical screen "R.Wieser" <address@not.available> - 2019-06-26 10:50 +0200
              Re: reading / writing the color of an absolute pixel (x,y) of the physical screen Alfonso P Cutaway <dweed54@gmail.com> - 2019-06-26 19:43 +0000
                Re: reading / writing the color of an absolute pixel (x,y) of the physical screen "Carlos E.R." <robin_listas@es.invalid> - 2019-06-26 22:37 +0200
                Re: reading / writing the color of an absolute pixel (x,y) of the physical screen Alfonso P Cutaway <dweed54@gmail.com> - 2019-06-26 20:55 +0000
                Re: reading / writing the color of an absolute pixel (x,y) of the physical screen "Carlos E.R." <robin_listas@es.invalid> - 2019-06-26 23:29 +0200
                Re: reading / writing the color of an absolute pixel (x,y) of the physical screen Aragorn <thorongil@telenet.be> - 2019-06-26 23:50 +0200
                Re: reading / writing the color of an absolute pixel (x,y) of the physical screen Alfonso P Cutaway <dweed54@gmail.com> - 2019-06-26 22:50 +0000
                Re: reading / writing the color of an absolute pixel (x,y) of the physical screen DecadentLinuxUserNumeroUno@decadence.org - 2019-06-28 12:50 +0000
                Re: reading / writing the color of an absolute pixel (x,y) of the physical screen DecadentLinuxUserNumeroUno@decadence.org - 2019-06-28 12:56 +0000
                Re: reading / writing the color of an absolute pixel (x,y) of the physical screen "R.Wieser" <address@not.available> - 2019-06-27 11:10 +0200
                Re: reading / writing the color of an absolute pixel (x,y) of the physical screen Soviet_Mario <SovietMario@CCCP.MIR> - 2019-06-27 12:39 +0200
                Re: reading / writing the color of an absolute pixel (x,y) of the physical screen "R.Wieser" <address@not.available> - 2019-06-27 14:43 +0200
                Re: reading / writing the color of an absolute pixel (x,y) of the physical screen Soviet_Mario <SovietMario@CCCP.MIR> - 2019-06-27 15:57 +0200
        Re: reading / writing the color of an absolute pixel (x,y) of the physical screen Soviet_Mario <SovietMario@CCCP.MIR> - 2019-06-26 01:03 +0200
          Re: reading / writing the color of an absolute pixel (x,y) of the physical screen Alfonso P Cutaway <dweed54@gmail.com> - 2019-06-26 00:38 +0000
  Re: reading / writing the color of an absolute pixel (x,y) of the physical screen Wildman <best_lay@yahoo.com> - 2019-06-25 11:18 -0500
    Re: reading / writing the color of an absolute pixel (x,y) of the physical screen Soviet_Mario <SovietMario@CCCP.MIR> - 2019-06-26 01:02 +0200
      Re: reading / writing the color of an absolute pixel (x,y) of the physical screen Aragorn <thorongil@telenet.be> - 2019-06-26 01:08 +0200
  Re: reading / writing the color of an absolute pixel (x,y) of the physical screen Bit Twister <BitTwister@mouse-potato.com> - 2019-06-25 11:48 -0500
  Re: reading / writing the color of an absolute pixel (x,y) of the physical screen Paul <nospam@needed.invalid> - 2019-06-25 16:14 -0400
    Re: reading / writing the color of an absolute pixel (x,y) of the physical screen Soviet_Mario <SovietMario@CCCP.MIR> - 2019-06-26 01:13 +0200
      Re: reading / writing the color of an absolute pixel (x,y) of the physical screen "F. Russell" <fr@random.info> - 2019-06-26 08:37 +0000
        Re: reading / writing the color of an absolute pixel (x,y) of the physical screen Soviet_Mario <SovietMario@CCCP.MIR> - 2019-06-26 12:29 +0200
          Re: reading / writing the color of an absolute pixel (x,y) of the physical screen Bit Twister <BitTwister@mouse-potato.com> - 2019-06-26 06:55 -0500
          Re: reading / writing the color of an absolute pixel (x,y) of the physical screen "F. Russell" <frussell@random.info> - 2019-06-26 12:15 +0000
          Re: reading / writing the color of an absolute pixel (x,y) of the physical screen owl <owl@rooftop.invalid> - 2019-06-26 12:35 +0000
            Re: reading / writing the color of an absolute pixel (x,y) of the physical screen Soviet_Mario <SovietMario@CCCP.MIR> - 2019-06-26 15:44 +0200
              Re: reading / writing the color of an absolute pixel (x,y) of the physical screen owl <owl@rooftop.invalid> - 2019-06-26 14:00 +0000
                Re: reading / writing the color of an absolute pixel (x,y) of the physical screen Soviet_Mario <SovietMario@CCCP.MIR> - 2019-06-26 21:01 +0200
                Re: reading / writing the color of an absolute pixel (x,y) of the physical screen owl <owl@rooftop.invalid> - 2019-06-26 23:05 +0000
                Re: reading / writing the color of an absolute pixel (x,y) of the physical screen Soviet_Mario <SovietMario@CCCP.MIR> - 2019-06-27 12:27 +0200
                Re: reading / writing the color of an absolute pixel (x,y) of the physical screen owl <owl@rooftop.invalid> - 2019-06-27 13:53 +0000
  Re: reading / writing the color of an absolute pixel (x,y) of the physical screen Jasen Betts <jasen@xnet.co.nz> - 2019-06-26 10:13 +0000
  Re: reading / writing the color of an absolute pixel (x,y) of the physical screen Soviet_Mario <SovietMario@CCCP.MIR> - 2019-06-26 12:49 +0200

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