win/rfb_win32/LocalMem.h

/* Copyright (C) 2002-2005 RealVNC Ltd.  All Rights Reserved.
 * 
 * This 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.
 * 
 * This software 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 this software; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
 * USA.
 */

#ifndef __RFB_WIN32_LOCALMEM_H__
#define __RFB_WIN32_LOCALMEM_H__

#include <windows.h>
#include <rdr/Exception.h>

namespace rfb {
  namespace win32 {

    // Allocate and/or manage LocalAlloc memory.
    struct LocalMem {
      LocalMem(int size) : ptr(LocalAlloc(LMEM_FIXED, size)) {
        if (!ptr) throw rdr::SystemException("LocalAlloc", GetLastError());
      }
      LocalMem(void* p) : ptr(p) {}
      ~LocalMem() {LocalFree(ptr);}
      operator void*() {return ptr;}
      void* takePtr() {
        void* t = ptr; ptr = 0; return t;
      }
      void* ptr;
    };

  };
};

#endif