[vtkusers] vtkOpenGLRenderWindow::GetFrontBuffer throw system access violation when using vtkCaptionWidget

[David Cole]

Try removing all your caption widgets from your list as the window is closing.

David


> On Sep 25, 2016, at 12:25 PM, Liu_tj <tjlp at netease.com> wrote:
> 
> Hi,
> 
> I am using Activiz .NET 7.1. In my application, I use a C# List to store the vtkCaptionWidget objects. When the application is closed, then system access violation exception is thrown. In Visual Stuido debugger, no call stack can be tracked. Then I used windbg to debug the application. Windbg show below message:
> 
> ** ERROR: Symbol file could not be found.  Defaulted to export symbols for C:\Personal\Code\Dev\Chaos3D.UI.Application.FE\bin\Debug\vtkInteractionWidgets-7.1.dll - 
> vtkRenderingOpenGL_7_1!vtkOpenGLRenderWindow::GetFrontBuffer+0x1b51ce:
> 00007ff9`20d1b50c 488b00          mov     rax,qword ptr [rax] ds:00000000`00000000=????????????????
> 
> The call stack is:
> vtkRenderingOpenGL_7_1!vtkOpenGLRenderWindow::GetFrontBuffer+0x1b51ce
> vtkInteractionWidgets_7_1!vtkBalloonWidget::vtkBalloonWidget+0x98b7d
> vtkRenderingCore_7_1!vtkTransformInterpolator::InterpolateTransform+0x150ba9
> vtkRenderingCore_7_1!vtkTransformInterpolator::InterpolateTransform+0x150f73
> vtkCommonCore_7_1!vtkAnimationCue::Finalize+0x26ed1f
> vtkCommonCore_7_1!vtkAnimationCue::Finalize+0x44c356
> vtkCommonCore_7_1!vtkAnimationCue::Finalize+0x44ca96
> vtkCommonCore_7_1!vtkAnimationCue::Finalize+0x44d3cb
> vtkCommonCore_7_1!vtkAnimationCue::Finalize+0x44a082
> vtkRenderingCore_7_1!vtkTransformInterpolator::InterpolateTransform+0x20c52b
> vtkRenderingCore_7_1!vtkTransformInterpolator::InterpolateTransform+0x2069c2
> Kitware_VTK_vtkRenderingCore_Unmanaged!vtkColorTransferFunction_GetIndexedColor_35+0x4c844
> 
> What might be the problem? What I can guess is it is about some unmanaged VTK resource release issue.
> 
> Thanks.
> Liu Peng
> 
> 
>  
> 
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