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Re: Modify screen pixels

by "jbwest" <jbwest@[EMAIL PROTECTED] > Jun 3, 2008 at 05:55 PM

"fungus" <openglMYSOCKS@[EMAIL PROTECTED]
> wrote in message 
news:9f7d5e71-68cc-41e2-84d7-d7e0b02462c2@[EMAIL PROTECTED]
> On Jun 3, 9:59 am, Jonno <jo...@[EMAIL PROTECTED]
> wrote:
>> There is no glGetPixel or glSetPixel in OpenGL.
>> Windows API has GetPixel and SetPixel, and these (like all Windows GDI
>> functions) can draw to anywhere on the screen, including other
programs'
>> windows. But if you do this, the other programs will overwrite your
>> pixels the next time they redraw.
>
> I'm not sure even this works any more on Windows Vista.
>
>
> --
> <\___/>
> / O O \
> \_____/  FTB.     Remove my socks for email address.

Even if it did (a similar grab can be done in X11) its not quite what was 
asked for.
If anything on the screen is changing in any way, this snap & replace 
approach won't be right.
You'd have to snap & replace at refresh rate to make it "right" -- tough
to 
do.

jbw
 




 11 Posts in Topic:
Modify screen pixels
navid_ad <navid.fallah  2008-06-02 15:42:44 
Re: Modify screen pixels
"jbwest" <jb  2008-06-02 19:19:43 
Re: Modify screen pixels
Jonno <jonno@[EMAIL PR  2008-06-03 08:59:21 
Re: Modify screen pixels
fungus <openglMYSOCKS@  2008-06-03 01:23:27 
Re: Modify screen pixels
"jbwest" <jb  2008-06-03 17:55:10 
Re: Modify screen pixels
navid_ad <navid.fallah  2008-06-10 10:14:40 
Re: Modify screen pixels
aku ankka <jukka@[EMAI  2008-06-11 02:07:37 
Re: Modify screen pixels
navid_ad <navid.fallah  2008-06-11 17:00:18 
Re: Modify screen pixels
navid_ad <navid.fallah  2008-06-11 17:00:28 
Re: Modify screen pixels
navid_ad <navid.fallah  2008-06-15 14:56:20 
Re: Modify screen pixels
Paul Geisler <paul.gei  2008-06-27 02:16:23 

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