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Off-screen Shell or Display? [message #460617]

Thu, 01 September 2005 11:21

Eclipse User

Is there any way in SWT to create a Shell or Display that is off-screen,
so that standard SWT controls draw to memory instead of the screen? For
example to create thumbnails in a visual GUI builder.

Thanks,
Jonathan

Re: Off-screen Shell or Display? [message #460618 is a reply to message #460617]

Thu, 01 September 2005 11:50

Eclipse User

Originally posted by: sunil_kamath.nohotspammail.com

"Jonathan Edwards" <edwards@csail.mit.edu> wrote in message
news:df76ao$kk8$1@news.eclipse.org...
> Is there any way in SWT to create a Shell or Display that is off-screen,
> so that standard SWT controls draw to memory instead of the screen? For
> example to create thumbnails in a visual GUI builder.
>
No (and Yes).
You can create shells or controls off screen, but SWT does not support
drawing these widgets to an Image.
That being said, there are platform-specific solutions which are available.
Check the VE newsgroup.
---
Sunil

Re: Off-screen Shell or Display? [message #460625 is a reply to message #460618]

Thu, 01 September 2005 15:28

Eclipse User

> No (and Yes).
> You can create shells or controls off screen, but SWT does not support
> drawing these widgets to an Image.

Well, the API exists, but whether it actually works on all platforms and
when controls are clipped is another issue. I think the VE doesn't use any
tricks on win32.

> That being said, there are platform-specific solutions which are
> available. Check the VE newsgroup.
> ---
> Sunil
>

Re: Off-screen Shell or Display? [message #460627 is a reply to message #460625]

Thu, 01 September 2005 16:02

Eclipse User

Originally posted by: sunil_kamath.nohotspammail.com

"Randy Hudson" <none@us.ibm.com> wrote in message
news:df7ko6$8tl$1@news.eclipse.org...
>> No (and Yes).
>> You can create shells or controls off screen, but SWT does not support
>> drawing these widgets to an Image.
>
> Well, the API exists, but whether it actually works on all platforms and
> when controls are clipped is another issue. I think the VE doesn't use any
> tricks on win32.
>

VE uses SendMessage() with WM_PRINT on Windows.
VE uses native code on linux/GTK as well to do image capture.
---
Sunil

>> That being said, there are platform-specific solutions which are
>> available. Check the VE newsgroup.
>> ---
>> Sunil
>>
>
>

Re: Off-screen Shell or Display? [message #460658 is a reply to message #460627]

Fri, 02 September 2005 12:08

Eclipse User

Further, there's no support (yet?) for Mac OS X, though they're looking into it.

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