www.pudn.com > WmformatScreen.rar > safe_defs.h

// 
// safe_defs.h 
//  
/** 
 ** Copyright (C) 2005 EnjoyView Inc., all rights reserved. 
 **           Your View, Our Passion. Just Enjoy It! 
 ** 
 **            http://spaces.msn.com/members/jemylu 
 ** 
 **/ 
 
/*************************************************************************/ 
 
#ifndef __h_safe_defs__ 
#define __h_safe_defs__ 
 
#ifndef SAFE_RELEASE 
#define SAFE_RELEASE(x) \ 
   if (x != NULL)       \ 
   {                    \ 
      x->Release();     \ 
      x = NULL;         \ 
   } 
#endif 
 
#ifndef SAFE_DELETE 
#define SAFE_DELETE(x) \ 
   if (x != NULL)      \ 
   {                   \ 
      delete x;        \ 
      x = NULL;        \ 
   } 
#endif 
 
#ifndef SAFE_ARRAY_DELETE 
#define SAFE_ARRAY_DELETE(x) \ 
   if (x != NULL)            \ 
   {                         \ 
	  delete[] x;            \ 
	  x = NULL;              \ 
   } 
#endif 
 
#ifndef SAFE_CLOSEHANDLE 
#define SAFE_CLOSEHANDLE(h)         \ 
    if (h != NULL)                  \ 
    {                               \ 
        CloseHandle(h);             \ 
        h = NULL;                   \ 
    } 
#endif 
 
#ifndef SAFE_CLOSEFILEHANDLE 
#define SAFE_CLOSEFILEHANDLE(h)     \ 
    if (h != INVALID_HANDLE_VALUE)  \ 
    {                               \ 
        CloseHandle(h);             \ 
        h = INVALID_HANDLE_VALUE;   \ 
    } 
#endif  
 
 
 
#ifndef GOTO_EXIT_IF_FAILED 
#define GOTO_EXIT_IF_FAILED(hr) if(FAILED(hr)) goto Exit; 
#endif 
 
#ifndef BREAK_IF_FAILED 
#define BREAK_IF_FAILED(hr) if(FAILED(hr)) break; 
#endif 
 
#ifndef RETURN_IF_FAILED 
#define RETURN_IF_FAILED(hr) if(FAILED(hr)) return hr; 
#endif 
 
#endif // __h_safe_defs__