[nvda] Re: video system hooks

Yes that's right but even now days graphics cards are built on the
motherboard so this should not be an immediate issue.

 

Scott

 

 

 

From: nvda-bounce@xxxxxxxxxxxxx [mailto:nvda-bounce@xxxxxxxxxxxxx] On Behalf
Of developer
Sent: Thursday, May 28, 2009 12:39 PM
To: nvda@xxxxxxxxxxxxx
Subject: [nvda] Re: video system hooks

 

yes but user need to have a graphic card..

----- Original Message ----- 

From: kendell clark <mailto:coffeekingms@xxxxxxxxx>  

To: nvda@xxxxxxxxxxxxx 

Sent: Thursday, May 28, 2009 7:18 PM

Subject: [nvda] Re: video system hooks

 

This is because jaws uses what is called video intercept, or display
chaining. it is not portable because in order for it to run the display
chaining manager, or dcm has to be installed on the computer it is running
on. If nvda gets display hooks it will not affect it's portability. display
hooks are quite different from display chaining. instead of capturing video
information before it reaches the video card itself, display hooks capture
the information the  application   is sending to the video card and then
passes it on to the video card. it does not rely on  any special software to
be installed. it doesn't need any.  Nvda will use this method, rather than
display chaining for this reason. 
Thanks
Kendell clark
On 5/28/2009 12:11 PM, developer wrote: 

do you know example of jaws.

jaw is not portable with system hooks

so system hooks 

bye bye

----- Original Message ----- 

From: Josh <mailto:jkenn337@xxxxxxxxx>  

To: nvda email list <mailto:nvda@xxxxxxxxxxxxx>  

Sent: Thursday, May 28, 2009 4:02 PM

Subject: [nvda] video system hooks

 

Hi,

 

video system hooks will not decrease portability. System access is a good
example of a portable screen readerwith video system hookss. 

 

Josh

 

Josh email is    jkenn337@xxxxxxxxx
msn: kenn6498ku@xxxxxxxxxxx
skype: jkenn337

    

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