[vtk-developers] Fwd: [vtkusers] null vtkRenderWindow with CMake

[Bill Lorensen]

This will be an FAQ for VTK6. Is there a link to a simple solution. I know
there are wiki pages that justify/explain it. But is there a page that
suggests a simple solution?


---------- Forwarded message ----------
From: Dženan Zukić <dzenanz at gmail.com>
Date: Mon, May 27, 2013 at 4:54 AM
Subject: [vtkusers] null vtkRenderWindow with CMake
To: vtkusers <vtkusers at vtk.org>


I am switching over to vtk6. Following a recommendation to use COMPONENTS
argument in CMakeLists causes access violation at run time.
Namely, QVTKWidget::GetRenderWindow() crashes at line win->Delete(); due to
win being null. The function is called from my main window's constructor:

vtkOpenGLRenderer *renderer = vtkOpenGLRenderer::New();
qvtkWidget->GetRenderWindow()->AddRenderer(renderer); //crash

If I don't use the components (but rather link all modules), there is no
crash. Way of invoking VTK:

 #FIND_PACKAGE(VTK REQUIRED COMPONENTS vtkRenderingVolumeOpenGL
vtkGUISupportQt vtkGUISupportQtOpenGL vtkRenderingQt NO_MODULE)
FIND_PACKAGE(VTK REQUIRED COMPONENTS vtkGUISupportQtOpenGL)

I am using vtk git master. How can I resolve this crash? Or should I just
link all modules?

Regards,
Dženan

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