pixel colour on screen

[cjstuttle@hotmail.com]

Could anyone help me, I'm a python noob and need some help. im trying
to find some code that will, given a screen co-ordinate, will give me
the colour of that pixel in RGB. i have found a lot about getting the
pixel colour from a picture file with a given co-ordinate, but is it
possible to do it from the whole screen output regardless what
application the selected pixel is in?

any help would be help.

thanks, Chris

[Irmen de Jong]

Re: pixel colour on screen


Dennis Lee Bieber wrote:

On Sat, 28 Jun 2008 11:47:46 -0700 (PDT), cjstuttle@hotma il.com
declaimed the following in comp.lang.pytho n:
>

>Could anyone help me, I'm a python noob and need some help. im trying
>to find some code that will, given a screen co-ordinate, will give me
>the colour of that pixel in RGB. i have found a lot about getting the
>pixel colour from a picture file with a given co-ordinate, but is it
>possible to do it from the whole screen output regardless what
>application the selected pixel is in?
>>

Such capability differs with OS and GUI libraries. If one is lucky,
the GUI library will accept any screen coordinate -- but it is just as
likely that the OS could limit a program to only coordinates within its
own window.

Maybe the easiest way is to create a screenshot of the whole screen
(that should be doable from within a program, although this differs for every OS and GUI
lib as well) and then get the pixel value from that.

--irmen

[Tim Roberts]

Re: pixel colour on screen

cjstuttle@hotma il.com wrote:

>
>Could anyone help me, I'm a python noob and need some help. im trying
>to find some code that will, given a screen co-ordinate, will give me
>the colour of that pixel in RGB. i have found a lot about getting the
>pixel colour from a picture file with a given co-ordinate, but is it
>possible to do it from the whole screen output regardless what
>application the selected pixel is in?

Which operating system? If you are on Windows, and you have pywin32
loaded. you can use the Windows APIs GetDC and GetPixel.
--
Tim Roberts, timr@probo.com
Providenza & Boekelheide, Inc.

[chris]

Re: pixel colour on screen

On Jun 30, 4:37 am, Tim Roberts <t...@probo.com wrote:

cjstut...@hotma il.com wrote:
>

Could anyone help me, I'm a python noob and need some help. im trying
to find some code that will, given ascreenco-ordinate, will give me
thecolourof thatpixelin RGB. i have found a lot about getting the
pixelcolourfrom a picture file with a given co-ordinate, but is it
possible to do it from the wholescreenoutp ut regardless what
application the selectedpixelis in?

>
Which operating system?  If you are on Windows, and you have pywin32
loaded. you can use the Windows APIs GetDC and GetPixel.
--
Tim Roberts, t...@probo.com
Providenza & Boekelheide, Inc.

i have ubuntu hardy. does that help?

[Tim Roberts]

Re: pixel colour on screen

chris <cjstuttle@hotm ail.comwrote:

>On Jun 30, 4:37 am, Tim Roberts <t...@probo.com wrote:

>cjstut...@hotm ail.com wrote:
>>

>Could anyone help me, I'm a python noob and need some help. im trying
>to find some code that will, given ascreenco-ordinate, will give me
>thecolourof thatpixelin RGB. i have found a lot about getting the
>pixelcolourfro m a picture file with a given co-ordinate, but is it
>possible to do it from the wholescreenoutp ut regardless what
>application the selectedpixelis in?

>>
>Which operating system?  If you are on Windows, and you have pywin32
>loaded. you can use the Windows APIs GetDC and GetPixel.

>
>i have ubuntu hardy. does that help?

Then you will have to use a GUI library of some kind: wx, or Qt, or
tkinter. The answer depends on which GUI library you decide to use.
--
Tim Roberts, timr@probo.com
Providenza & Boekelheide, Inc.