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56 lines
1.5 KiB
C
56 lines
1.5 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkWeakReference.h
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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/**
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* @class vtkWeakReference
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* @brief Utility class to hold a weak reference to a vtkObject.
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*
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* Simple Set(...)/Get(...) interface. Used in numpy support to provide a
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* reference to a vtkObject without preventing it from being collected.
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*/
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#ifndef vtkWeakReference_h
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#define vtkWeakReference_h
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#include "vtkCommonCoreModule.h" // For export macro
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#include "vtkObject.h"
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#include "vtkWeakPointer.h"
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class VTKCOMMONCORE_EXPORT vtkWeakReference : public vtkObject
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{
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public:
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vtkTypeMacro(vtkWeakReference, vtkObject);
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static vtkWeakReference* New();
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vtkWeakReference();
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~vtkWeakReference() override;
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/**
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* Set the vtkObject to maintain a weak reference to.
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*/
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void Set(vtkObject* object);
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/**
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* Get the vtkObject pointer or nullptr if the object has been collected.
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*/
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vtkObject* Get();
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private:
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vtkWeakPointer<vtkObject> Object;
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};
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#endif
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// VTK-HeaderTest-Exclude: vtkWeakReference.h
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