Visual Studio 2003 crash for vtkOpenGLExtensionManager::ReadOpenGLExtensions()
This issue was created automatically from an original Mantis Issue. Further discussion may take place here.
The ReadOpenGLExtensions() method will call this->RenderWindow->Render() on Win32 machines if Render has not previously been called. This can cause a crash, because Render() in turn calls vtkOpenGLRenderWindow::OpenGLInit(), which calls vtkOpenGLRenderWindow::SetExtensionManager(0) and disassociates the ExtensionManager from the RenderWindow before creating a new ExtensionsManager.