csutil/win32/cachedll.h Source File (Crystal Space 2.0 Public API Reference)

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csutil/win32/cachedll.h
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    00001 /*
    00002     Copyright (C) 2004 by Jorrit Tyberghein
    00003               (C) 2004 by Frank Richter
    00004
    00005     This library is free software; you can redistribute it and/or
    00006     modify it under the terms of the GNU Library General Public
    00007     License as published by the Free Software Foundation; either
    00008     version 2 of the License, or (at your option) any later version.
    00009
    00010     This library is distributed in the hope that it will be useful,
    00011     but WITHOUT ANY WARRANTY; without even the implied warranty of
    00012     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00013     Library General Public License for more details.
    00014
    00015     You should have received a copy of the GNU Library General Public
    00016     License along with this library; if not, write to the Free
    00017     Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
    00018 */
    00019
    00020 #ifndef __CS_UTIL_WIN32_CACHEDLL_H__
    00021 #define __CS_UTIL_WIN32_CACHEDLL_H__
    00022
    00027 namespace CS
    00028 {
    00029 namespace Platform
    00030 {
    00031 namespace Win32
    00032 {
    00033
    00046 class CacheDLL
    00047 {
    00048   const char* dllName;
    00049   HMODULE dllHandle;
    00050 public:
    00051   CacheDLL (const char* dll) : dllName(dll), dllHandle (0)
    00052   {
    00053   }
    00054
    00055   ~CacheDLL ()
    00056   {
    00057     if (dllHandle != 0)
    00058       FreeLibrary (dllHandle);
    00059   }
    00060
    00061   HMODULE GetHandle ()
    00062   {
    00063     if (dllHandle == 0)
    00064       dllHandle = LoadLibraryA (dllName);
    00065     return dllHandle;
    00066   }
    00067
    00068   operator HMODULE ()
    00069   {
    00070     return GetHandle ();
    00071   }
    00072 };
    00073
    00074 } // namespace CS
    00075 } // namespace Platform
    00076 } // namespace Win32
    00077
    00078 #endif // __CS_UTIL_WIN32_CACHEDLL_H__