[vtkusers] Error during cleanup: wglMakeCurrent failed in Clean()

Francois Bertel francois.bertel at kitware.com
Thu Nov 26 09:59:06 EST 2009 

Thanks for pointing at to this bug report.

Can you try it on your local copy by changing line 111 (void
vtkWin32OpenGLRenderWindow::Clean() ):

from

if (wglMakeCurrent(NULL, NULL) != TRUE)

to
if (wglMakeCurrent(this->DeviceContext, NULL) != TRUE)


and tell us if it fixes your issue with Intel. If so, I'll commit the patch.

On Thu, Nov 26, 2009 at 9:53 AM, Zamir Khan <zkhan at modusmed.com> wrote:
> My apologies, I misread the status, it is still open and not fixed. I am
> fairly certain that this is the problem I'm seeing.
>
> Zamir Khan wrote:
>>
>> I think I've found the issue I'm encountering:
>> http://www.cmake.org/Bug/bug_view_advanced_page.php?bug_id=7119, but it
>> is supposed to be fixed? Was it possibly fixed in one location but not
>> another, or perhaps fixed and later reverted? I am unable to see the
>> diff for that particular code change.
>>
>> Zamir Khan wrote:
>> > Yes. First of all, thank you André for relaying that experience.
>> > However, I did update the Intel driver (to 7.14.10.1504) and I still see
>> > the issue. As another test, I disabled the Intel graphics acceleration
>> > altogether and then I do not see this error occur.
>> >
>> > Francois Bertel wrote:
>> > > Zamir, have you tried to upgrade your Intel driver as André did?
>> > >
>> > >
>> > > On Thu, Nov 26, 2009 at 9:08 AM, Zamir Khan <zkhan at modusmed.com>
>> > > <mailto:zkhan at modusmed.com%3E>
>> > <mailto:zkhan at modusmed.com%3E> <mailto:zkhan at modusmed.com%3E%3E>
>> > > <mailto:zkhan at modusmed.com%3E> <mailto:zkhan at modusmed.com%3E%3E>
>> > > <mailto:zkhan at modusmed.com%3E%3E> <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > > wrote:
>> > > > I'm developing on a Windows 7/ VS 2008 platform with an NVIDIA card
>> > > - the
>> > > > error does not occur on this system. The test system that
>> > reproduces the
>> > > > error is running Windows Vista and has Intel integrated graphics.
>> > > >
>> > > > Francois Bertel wrote:
>> > > >>
>> > > >> error 6 is ERROR_INVALID_HANDLE
>> > > >>
>> > > >> ref: http://help.netop.com/support/errorcodes/win32_error_codes.htm
>> > > >>
>> > > >> the line vtkWin32OpenGLRenderWindow::Clean() that triggers this
>> > > error code
>> > > >> is:
>> > > >>
>> > > >> wglMakeCurrent(NULL, NULL);
>> > > >>
>> > > >> According to the spec, NULL is a valid handle. Maybe it is a bug
>> > on MFC
>> > > >> side?
>> > > >> Which Windows version/Visual Studio do you have?
>> > > >>
>> > > >>
>> > > >> On Wed, Nov 25, 2009 at 4:41 PM, Zamir Khan <zkhan at modusmed.com>
>> > > >> <mailto:zkhan at modusmed.com%3E>
>> > <mailto:zkhan at modusmed.com%3E> <mailto:zkhan at modusmed.com%3E%3E>
>> > > <mailto:zkhan at modusmed.com%3E> <mailto:zkhan at modusmed.com%3E%3E>
>> > > <mailto:zkhan at modusmed.com%3E%3E> <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > > >> <mailto:zkhan at modusmed.com%3E> <mailto:zkhan at modusmed.com%3E%3E>
>> > > >> <mailto:zkhan at modusmed.com%3E%3E> <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E> <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E> <mailto:zkhan at modusmed.com%3E%3E%3E%3E>
>> > wrote:
>> > > >> > I believe I've fixed the activation context exception (thanks
>> > for the
>> > > >> > help
>> > > >> > there!), but the initial problem still remains - changing the
>> > > order of
>> > > >> > the
>> > > >> > cleanup did not help, any other thoughts?
>> > > >> >
>> > > >> > Is there a good example of the specific order that VTK object
>> > cleanup
>> > > >> > should
>> > > >> > occur in and any specialized calls to be aware of (i.e. Finalize,
>> > > >> > RemoveAllViewProps, etc)?
>> > > >> >
>> > > >> > Francois Bertel wrote:
>> > > >> >>
>> > > >> >> Googling the error message you just gave, shows it has to do
>> > > with MFC
>> > > >> >> and maybe related to call to
>> > > >> >> ActivateActCtx(); / DeactivateActCtx(); in some wrong order.
>> > > >> >>
>> > > >> >> On Wed, Nov 25, 2009 at 11:51 AM, Zamir Khan
>> > > <zkhan at modusmed.com> <mailto:zkhan at modusmed.com%3E>
>> > > <mailto:zkhan at modusmed.com%3E> <mailto:zkhan at modusmed.com%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E> <mailto:zkhan at modusmed.com%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E> <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > > >> >> <mailto:zkhan at modusmed.com%3E> <mailto:zkhan at modusmed.com%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E> <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E> <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E%3E>
>> > > >> >> <mailto:zkhan at modusmed.com%3E> <mailto:zkhan at modusmed.com%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E> <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E> <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E%3E>
>> > > <mailto:zkhan at modusmed.com%3E%3E> <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E%3E%3E>
>> > > wrote:
>> > > >> >> > Thanks Francois - I have tried this before (it *does* seem the
>> > > >> >> > logical
>> > > >> >> > thing
>> > > >> >> > to do), but the initial problem remains and I also then see an
>> > > >> >> > additional
>> > > >> >> > exception occur on all platforms:
>> > > >> >> >
>> > > >> >> > "Unhandled exception at 0x77644401 in XXXX.exe: 0xC015000F:
>> > > >> >> > The
>> > > >> >> > activation
>> > > >> >> > context being deactivated is not the most recently activated
>> > one."
>> > > >> >> >
>> > > >> >> > It could be that this is a step in the right direction, but
>> > > >> >> > more
>> > > >> >> > changes
>> > > >> >> > are
>> > > >> >> > needed - I'm not sure!
>> > > >> >> >
>> > > >> >> > Francois Bertel wrote:
>> > > >> >> >>
>> > > >> >> >> Hello,
>> > > >> >> >>
>> > > >> >> >> Swap your two parts: delete the renderer first and then the
>> > > >> >> >> renderwindow.
>> > > >> >> >>
>> > > >> >> >>
>> > > >> >> >> The reason is that RemoveAllViewProps() (implemented in
>> > > >> >> >> vtkViewport.cxx, superclass of vtkRenderer) calls
>> > > >> >> >> ReleaseGraphicsResources() on each prop which requires
>> > > (indirectly)
>> > > >> >> >> a
>> > > >> >> >> valid window. For example, a prop like vtkActor will call
>> > > >> >> >> ReleaseGraphicsResources() on its texture to release the
>> > > >> >> >> OpenGL
>> > > >> >> >> texture object id.
>> > > >> >> >>
>> > > >> >> >>
>> > > >> >> >> On Wed, Nov 25, 2009 at 11:19 AM, Zamir Khan
>> > > <zkhan at modusmed.com> <mailto:zkhan at modusmed.com%3E>
>> > > <mailto:zkhan at modusmed.com%3E> <mailto:zkhan at modusmed.com%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E> <mailto:zkhan at modusmed.com%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E> <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > > >> >> >> <mailto:zkhan at modusmed.com%3E>
>> > > >> >> >> <mailto:zkhan at modusmed.com%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E> <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E> <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E%3E>
>> > > >> >> >> <mailto:zkhan at modusmed.com%3E>
>> > > >> >> >> <mailto:zkhan at modusmed.com%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E> <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > > <mailto:zkhan at modusmed.com%3E%3E> <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E%3E> <mailto:zkhan at modusmed.com%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E%3E>
>> > > <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > > <mailto:zkhan at modusmed.com%3E%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E%3E%3E>
>> > > >> >> >> <mailto:zkhan at modusmed.com%3E>
>> > > >> >> >> <mailto:zkhan at modusmed.com%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E> <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > > <mailto:zkhan at modusmed.com%3E%3E> <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E%3E> <mailto:zkhan at modusmed.com%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E%3E>
>> > > <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > > <mailto:zkhan at modusmed.com%3E%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E%3E%3E>
>> > > >> >> >> <mailto:zkhan at modusmed.com%3E%3E>
>> > > >> >> >> <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E%3E>
>> > > <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > > <mailto:zkhan at modusmed.com%3E%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E%3E%3E>
>> > > <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > > <mailto:zkhan at modusmed.com%3E%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E%3E%3E>
>> > > <mailto:zkhan at modusmed.com%3E%3E%3E%3E>
>> > > <mailto:zkhan at modusmed.com%3E%3E%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E%3E%3E%3E>
>> > > >> >> >> wrote:
>> > > >> >> >> > I am seeing the following errors from a VTK 5 / MFC
>> > application
>> > > >> >> >> > when
>> > > >> >> >> > I
>> > > >> >> >> > close
>> > > >> >> >> > it:
>> > > >> >> >> >
>> > > >> >> >> > ERROR: In ..\..\Rendering\vtkWin32OpenGLRenderWindow.cxx,
>> > > line 113
>> > > >> >> >> > vtkWin32OpenGLRenderWindow (0685AF70): wglMakeCurrent
>> > failed in
>> > > >> >> >> > Clean(),
>> > > >> >> >> > error: 6
>> > > >> >> >> >
>> > > >> >> >> > ERROR: In ..\..\Rendering\vtkWin32OpenGLRenderWindow.cxx,
>> > > line 113
>> > > >> >> >> > vtkWin32OpenGLRenderWindow (0698BAE8): wglMakeCurrent
>> > failed in
>> > > >> >> >> > Clean(),
>> > > >> >> >> > error: 6
>> > > >> >> >> >
>> > > >> >> >> > The error will appear 2 or 3 times in the debug output
>> > > >> >> >> > file,
>> > > >> >> >> > depending
>> > > >> >> >> > on
>> > > >> >> >> > what actions I have taken in the program (I assume for the
>> > > >> >> >> > instances
>> > > >> >> >> > of
>> > > >> >> >> > vtkRenderWindow that are problematic). Also, I can only
>> > > reproduce
>> > > >> >> >> > it
>> > > >> >> >> > on
>> > > >> >> >> > certain platforms (doesn't happen on machine with NVIDIA,
>> > > but does
>> > > >> >> >> > on
>> > > >> >> >> > machine with Intel integrated graphics). I have searched
>> > > >> >> >> > the
>> > > >> >> >> > mailing
>> > > >> >> >> > list
>> > > >> >> >> > and the recommendation appears to be to make sure to
>> > Finalize()
>> > > >> >> >> > the
>> > > >> >> >> > vtkRenderWindow (there are 3 of them being instantiated
>> > in this
>> > > >> >> >> > application). In the destructor of each of the classes that
>> > > >> >> >> > instantiate
>> > > >> >> >> > vtkRenderWindows, I have the following code snippets:
>> > > >> >> >> >
>> > > >> >> >> > if (renWin)
>> > > >> >> >> > {
>> > > >> >> >> > renWin->Finalize();
>> > > >> >> >> > renWin->Delete();
>> > > >> >> >> > }
>> > > >> >> >> > if (renderer)
>> > > >> >> >> > {
>> > > >> >> >> > renderer->RemoveAllViewProps();
>> > > >> >> >> > renderer->Delete();
>> > > >> >> >> > }
>> > > >> >> >> >
>> > > >> >> >> > However, this does not resolve the issue. Any help is
>> > > appreciated!
>> > > >> >> >> >
>> > > >> >> >> > Thanks,
>> > > >> >> >> > Zamir
>> > > >> >> >> >
>> > > >> >> >> > --
>> > > >> >> >> > Zamir Khan
>> > > >> >> >> > Modus Medical Devices
>> > > >> >> >> > e-mail: zkhan at modusmed.com <mailto:zkhan at modusmed.com>
>> > > >> >> >> > <mailto:zkhan at modusmed.com> <mailto:zkhan at modusmed.com%3E>
>> > <mailto:zkhan at modusmed.com> <mailto:zkhan at modusmed.com%3E>
>> > <mailto:zkhan at modusmed.com%3E> <mailto:zkhan at modusmed.com%3E%3E>
>> > > <mailto:zkhan at modusmed.com> <mailto:zkhan at modusmed.com%3E>
>> > > <mailto:zkhan at modusmed.com%3E> <mailto:zkhan at modusmed.com%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E> <mailto:zkhan at modusmed.com%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E> <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > > >> >> >> > <mailto:zkhan at modusmed.com> <mailto:zkhan at modusmed.com%3E>
>> > <mailto:zkhan at modusmed.com%3E> <mailto:zkhan at modusmed.com%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E> <mailto:zkhan at modusmed.com%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E> <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > > <mailto:zkhan at modusmed.com%3E> <mailto:zkhan at modusmed.com%3E%3E>
>> > > <mailto:zkhan at modusmed.com%3E%3E> <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E> <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E> <mailto:zkhan at modusmed.com%3E%3E%3E%3E>
>> > > >> >> >> > <mailto:zkhan at modusmed.com> <mailto:zkhan at modusmed.com%3E>
>> > <mailto:zkhan at modusmed.com%3E> <mailto:zkhan at modusmed.com%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E> <mailto:zkhan at modusmed.com%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E> <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > > <mailto:zkhan at modusmed.com%3E> <mailto:zkhan at modusmed.com%3E%3E>
>> > > <mailto:zkhan at modusmed.com%3E%3E> <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E> <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E> <mailto:zkhan at modusmed.com%3E%3E%3E%3E>
>> > > >> >> >> > <mailto:zkhan at modusmed.com%3E>
>> > > >> >> >> > <mailto:zkhan at modusmed.com%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E> <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > > <mailto:zkhan at modusmed.com%3E%3E> <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E%3E> <mailto:zkhan at modusmed.com%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E%3E>
>> > > <mailto:zkhan at modusmed.com%3E%3E%3E>
>> > > <mailto:zkhan at modusmed.com%3E%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E%3E>
>> > <mailto:zkhan at modusmed.com%3E%3E%3E%3E%3E>
>> > > >> >> >> >
>> > > >> >> >> > _______________________________________________
>> > > >> >> >> > Powered by www.kitware.com
>> > > >> >> >> >
>> > > >> >> >> > Visit other Kitware open-source projects at
>> > > >> >> >> > http://www.kitware.com/opensource/opensource.html
>> > > >> >> >> >
>> > > >> >> >> > Please keep messages on-topic and check the VTK FAQ at:
>> > > >> >> >> > http://www.vtk.org/Wiki/VTK_FAQ
>> > > >> >> >> >
>> > > >> >> >> > Follow this link to subscribe/unsubscribe:
>> > > >> >> >> > http://www.vtk.org/mailman/listinfo/vtkusers
>> > > >> >> >> >
>> > > >> >> >>
>> > > >> >> >>
>> > > >> >> >>
>> > > >> >> >> --
>> > > >> >> >> François Bertel, PhD | Kitware Inc. Suite 204
>> > > >> >> >> 1 (518) 371 3971 x113 | 28 Corporate Drive
>> > > >> >> >> | Clifton Park NY 12065, USA
>> > > >> >> >> _______________________________________________
>> > > >> >> >> Powered by www.kitware.com
>> > > >> >> >>
>> > > >> >> >> Visit other Kitware open-source projects at
>> > > >> >> >> http://www.kitware.com/opensource/opensource.html
>> > > >> >> >>
>> > > >> >> >> Please keep messages on-topic and check the VTK FAQ at:
>> > > >> >> >> http://www.vtk.org/Wiki/VTK_FAQ
>> > > >> >> >>
>> > > >> >> >> Follow this link to subscribe/unsubscribe:
>> > > >> >> >> http://www.vtk.org/mailman/listinfo/vtkusers
>> > > >> >> >>
>> > > >> >> >>
>> > > >> >> >>
>> > >
>> > > ------------------------------------------------------------------------
>> > > >> >> >
>> > > >> >> >
>> > > >> >>
>> > > >> >>
>> > > >> >>
>> > > >> >> --
>> > > >> >> François Bertel, PhD | Kitware Inc. Suite 204
>> > > >> >> 1 (518) 371 3971 x113 | 28 Corporate Drive
>> > > >> >> | Clifton Park NY 12065, USA
>> > > >> >> _______________________________________________
>> > > >> >> Powered by www.kitware.com
>> > > >> >>
>> > > >> >> Visit other Kitware open-source projects at
>> > > >> >> http://www.kitware.com/opensource/opensource.html
>> > > >> >>
>> > > >> >> Please keep messages on-topic and check the VTK FAQ at:
>> > > >> >> http://www.vtk.org/Wiki/VTK_FAQ
>> > > >> >>
>> > > >> >> Follow this link to subscribe/unsubscribe:
>> > > >> >> http://www.vtk.org/mailman/listinfo/vtkusers
>> > > >> >>
>> > > >> >>
>> > >
>> > > ------------------------------------------------------------------------
>> > > >> >
>> > > >> >
>> > > >>
>> > > >>
>> > > >>
>> > > >> --
>> > > >> François Bertel, PhD | Kitware Inc. Suite 204
>> > > >> 1 (518) 371 3971 x113 | 28 Corporate Drive
>> > > >> | Clifton Park NY 12065, USA
>> > > >> _______________________________________________
>> > > >> Powered by www.kitware.com
>> > > >>
>> > > >> Visit other Kitware open-source projects at
>> > > >> http://www.kitware.com/opensource/opensource.html
>> > > >>
>> > > >> Please keep messages on-topic and check the VTK FAQ at:
>> > > >> http://www.vtk.org/Wiki/VTK_FAQ
>> > > >>
>> > > >> Follow this link to subscribe/unsubscribe:
>> > > >> http://www.vtk.org/mailman/listinfo/vtkusers
>> > > >>
>> > >
>> > > ------------------------------------------------------------------------
>> > > >
>> > >
>> > >
>> > >
>> > > --
>> > > François Bertel, PhD | Kitware Inc. Suite 204
>> > > 1 (518) 371 3971 x113 | 28 Corporate Drive
>> > > | Clifton Park NY 12065, USA
>> > > _______________________________________________
>> > > Powered by www.kitware.com
>> > >
>> > > Visit other Kitware open-source projects at
>> > > http://www.kitware.com/opensource/opensource.html
>> > >
>> > > Please keep messages on-topic and check the VTK FAQ at:
>> > > http://www.vtk.org/Wiki/VTK_FAQ
>> > >
>> > > Follow this link to subscribe/unsubscribe:
>> > > http://www.vtk.org/mailman/listinfo/vtkusers
>> > >
>> > > ------------------------------------------------------------------------
>> > _______________________________________________
>> > Powered by www.kitware.com
>> >
>> > Visit other Kitware open-source projects at
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>> >
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>> > ------------------------------------------------------------------------
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>> Visit other Kitware open-source projects at
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>>
>> Please keep messages on-topic and check the VTK FAQ at:
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>>
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-- 
François Bertel, PhD  | Kitware Inc. Suite 204
1 (518) 371 3971 x113 | 28 Corporate Drive
                      | Clifton Park NY 12065, USA

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