vtkDynamicLoader.h

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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkDynamicLoader.h,v $

  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
#ifndef __vtkDynamicLoader_h
#define __vtkDynamicLoader_h
#include "vtkObject.h"

//BTX
// Ugly stuff for library handles
// They are different on several different OS's
#if defined(__hpux)
# include <dl.h> // Needed for special dynamic loading on hp
  typedef shl_t vtkLibHandle;
#elif defined(_WIN32)
  typedef void* vtkLibHandle;
#else
  typedef void* vtkLibHandle;
#endif
//ETX



class VTK_COMMON_EXPORT vtkDynamicLoader : public vtkObject
{
public:
  static vtkDynamicLoader* New();
  vtkTypeRevisionMacro(vtkDynamicLoader,vtkObject);

  //BTX
  static vtkLibHandle OpenLibrary(const char*);


  static int CloseLibrary(vtkLibHandle);
  //ETX
  
  static void* GetSymbolAddress(vtkLibHandle, const char*);

  static const char* LibPrefix();

  static const char* LibExtension();

  static const char* LastError();
  
protected:
  vtkDynamicLoader() {};
  ~vtkDynamicLoader() {};

  
private:
  vtkDynamicLoader(const vtkDynamicLoader&);  // Not implemented.
  void operator=(const vtkDynamicLoader&);  // Not implemented.
};

#endif

---