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Common/vtkDynamicLoader.h

00001 /*=========================================================================
00002 
00003   Program:   Visualization Toolkit
00004   Module:    $RCSfile: vtkDynamicLoader.h,v $
00005 
00006   Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
00007   All rights reserved.
00008   See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
00009 
00010      This software is distributed WITHOUT ANY WARRANTY; without even
00011      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
00012      PURPOSE.  See the above copyright notice for more information.
00013 
00014 =========================================================================*/
00022 #ifndef __vtkDynamicLoader_h
00023 #define __vtkDynamicLoader_h
00024 #include "vtkObject.h"
00025 
00026 //BTX
00027 // Ugly stuff for library handles
00028 // They are different on several different OS's
00029 #if defined(__hpux)
00030 # include <dl.h> // Needed for special dynamic loading on hp
00031   typedef shl_t vtkLibHandle;
00032 #elif defined(_WIN32)
00033   typedef HMODULE vtkLibHandle;
00034 #else
00035   typedef void* vtkLibHandle;
00036 #endif
00037 //ETX
00038 
00039 
00040 
00041 class VTK_COMMON_EXPORT vtkDynamicLoader : public vtkObject
00042 {
00043 public:
00044   static vtkDynamicLoader* New();
00045   vtkTypeRevisionMacro(vtkDynamicLoader,vtkObject);
00046 
00047   //BTX
00050   static vtkLibHandle OpenLibrary(const char*);
00051 
00053 
00055   static int CloseLibrary(vtkLibHandle);
00056   //ETX
00058   
00060   static void* GetSymbolAddress(vtkLibHandle, const char*);
00061 
00063   static const char* LibPrefix();
00064 
00066   static const char* LibExtension();
00067 
00069   static const char* LastError();
00070   
00071 protected:
00072   vtkDynamicLoader() {};
00073   ~vtkDynamicLoader() {};
00074 
00075   
00076 private:
00077   vtkDynamicLoader(const vtkDynamicLoader&);  // Not implemented.
00078   void operator=(const vtkDynamicLoader&);  // Not implemented.
00079 };
00080 
00081 #endif