[Qt-interest] Re : Re : Rendering widget on Multiple screens

[Sean Harmer]

Hi,

On Monday 14 December 2009 03:26:20 Nitin Mahajan wrote:
> 
> I started multiple screens by setting the QWS_DISPLAY env variable like
>  this
> 
> export QWS_DISPLAY="Multi: QVFb:0 QVFb:1 QVFb:offset=20,0:2", Is that the
>  write way for the example code to work? I think, it is not, cuase the
>  mouse cursor is seen on all the screens.
> 
> What would be the alternate way to start the multiple screens?

Do you really only want a 20 pixel offset for your third screen from your first? 
That seems very small. You are therefore seeing things on all 3 screens since 
screens 1 and 2 show the same region and screen 3 is only offset by 20 pixels.

Also I think your are missing a :3 at the end of your statement. 

To start with try this:

export QWS_DISPLAY="Multi: QVFb:0 QVFb:offset=640,0:1 :2"

That should give you two displays with the 2nd display offset from the first by 
640 pixels in the x-direction.

Once you get this working then try building it up to 3 screens with something 
like this:

export QWS_DISPLAY="Multi: QVFb:0 QVFb:offset=640,0:1 QVfb::offset=1280,0:2 :3"

That *should* give you 3 displays with the second one offset from the first by 
640 pixels in the x-direction. The 3rd display will be offset from the first 
display by 1280 pixels in the x-direction.

Hope this helps,

Sean