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

[Francois Bertel]

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> 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> 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>
>> >
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>>
>>
>>
>> --
>> 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:
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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