DynamicLibrary.h

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//    Copyright 2004, SenseGraphics AB
//
//    This file is part of H3D API.
//
//    H3D API is free software; you can redistribute it and/or modify
//    it under the terms of the GNU General Public License as published by
//    the Free Software Foundation; either version 2 of the License, or
//    (at your option) any later version.
//
//    H3D API is distributed in the hope that it will be useful,
//    but WITHOUT ANY WARRANTY; without even the implied warranty of
//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//    GNU General Public License for more details.
//
//    You should have received a copy of the GNU General Public License
//    along with H3D API; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//
//    A commercial license is also available. Please contact us at 
//    www.sensegraphics.com for more information.
//
//
//
#ifndef __DYNAMICLIBRARY_H__
#define __DYNAMICLIBRARY_H__

#include <string>
#include "H3DApi.h"
#include "Exception.h"

namespace H3D {
  struct H3DAPI_API DynamicLibrary {
    H3D_VALUE_EXCEPTION( std::string, CouldNotLoadDynamicLibrary );

    #if WIN32
    typedef HMODULE LIBHANDLE;
    typedef FARPROC SYMBOLPTR;
    #else
    typedef void * LIBHANDLE;
    typedef void * SYMBOLPTR;
    #endif

    static LIBHANDLE load( const std::string &lib_name );

    static int close( LIBHANDLE handle ); 

    static SYMBOLPTR getSymbolAddress( LIBHANDLE handle, 
                                       const std::string &symbol_name );

    static string getLastError();

  private:
    static string last_error;
  };
}

#endif

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