当以保护模式运行时，如何删除文件夹中的缓存?

问题描述

在以保护模式运行时如何删除文件夹中的缓存?谢谢...

How to delete the cache in the folder when ie running in protected mode?Thanks...

推荐答案

#include <wininet.h>
#include <shlguid.h>
#include <urlhist.h>

void __fastcall ClearCache()
{
   DWORD dwSize = sizeof(INTERNET_CACHE_ENTRY_INFO); 
   INTERNET_CACHE_ENTRY_INFO *info = (INTERNET_CACHE_ENTRY_INFO*) LocalAlloc(LMEM_FIXED, dwSize); 
   if( info )
   {
      HANDLE hFind = FindFirstUrlCacheEntry(NULL, info, &dwSize); 
      if( hFind == NULL )
      {
         if( GetLastError() == ERROR_INSUFFICIENT_BUFFER )
         { 
            info = (INTERNET_CACHE_ENTRY_INFO*) LocalReAlloc(info, dwSize, LMEM_FIXED); 
            if( info )
               hFind = FindFirstUrlCacheEntry(NULL, info, &dwSize); 
         }
      }

      if( hFind != NULL ) 
      { 
         do
         {
            if( info->CacheEntryType & NORMAL_CACHE_ENTRY )
            {
               DeleteFile(info->lpszLocalFileName);
               DeleteUrlCacheEntry(info->lpszSourceUrlName);
            }

            if( FindNextUrlCacheEntry(hFind, info, &dwSize) )
               continue;

            if( GetLastError() == ERROR_INSUFFICIENT_BUFFER )
            { 
               info = (INTERNET_CACHE_ENTRY_INFO*) LocalReAlloc(info, dwSize, LMEM_FIXED); 
               if( info )
               {
                  if( FindNextUrlCacheEntry(hFind, info, &dwSize) )
                        continue;
               }
            }

            break;

         }
         while( true );

         FindCloseUrlCache(hFind);
      } 

      if( info )
         LocalFree(info); 
   }
}

void __fastcall ClearHistory()
{
   TComInterface<IUrlHistoryStg2> History;
   if( SUCCEEDED(CoCreateInstance(CLSID_CUrlHistory, NULL, CLSCTX_INPROC_SERVER, IID_IUrlHistoryStg2, (void **)&History)) )
      History->ClearHistory();
}

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