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            面對現實,超越自己
            逆水行舟,不進則退
            posts - 269,comments - 32,trackbacks - 0
            本文轉自:http://m.shnenglu.com/humanchao/archive/2008/07/02/55154.html


            #import   
            "scrrun.dll"   raw_interfaces_only

            // 參數格式:"c:\" 或 "c:\test"
            ULONGLONG GetPathUseSpace(
            const char *szPath)
            {
                ASSERT(szPath 
            != NULL);

                
            int nLen = strlen(szPath);
                
            if (nLen == 0)
                    
            return 0;

                ULONGLONG result 
            = 0;

                
            if (nLen == 3)      // c:\
                {
                    ULARGE_INTEGER nFreeBytesAvailable;
                    ULARGE_INTEGER nTotalNumberOfBytes;
                    ULARGE_INTEGER nTotalNumberOfFreeBytes;
                    
            //
                    if (GetDiskFreeSpaceEx(szPath,
                          
            &nFreeBytesAvailable,
                          
            &nTotalNumberOfBytes,
                          
            &nTotalNumberOfFreeBytes))
                    {
                        result 
            = nTotalNumberOfBytes.QuadPart - nFreeBytesAvailable.QuadPart;
                    }
                }
                
            else
                {
                    CoInitialize(NULL);  
                    {  
                        
            try  
                        {  
                            Scripting::IFileSystem3Ptr   fs;  
                            fs.CreateInstance(__uuidof(Scripting::FileSystemObject)); 
                            
                            Scripting::IFolderPtr   folder;  
                            fs
            ->GetFolder(_bstr_t(szPath),&folder);
                            
                            _variant_t vsize;
                            folder
            ->get_Size(&vsize);
                            result 
            = (double)vsize;
                        }  
                        
            catch(_com_error &e)  
                        {  
                            result 
            = -1;
                        }  
                    }  

                    CoUninitialize();   
                }

                
            return result;
            }

            Scrrun.dll枚舉文件
            CoInitialize(NULL); 

                
            try 
                {  
                    Scripting::IFileCollectionPtr   files; 
                    folder
            -> get_Files(&files); 
                    
            long   count   =   0
                    files
            -> get_Count(&count); 
                    cout 
            < < "files   count: " < <count < <endl; 
                    IUnknown   
            *pUnk=NULL; 
                    HRESULT   hr   
            =   files-> get__NewEnum(&pUnk); 
                    
            if(SUCCEEDED(hr)) 
                    { 
                        CComPtr 
            <IEnumVARIANT>   pEnum; 
                        hr   
            =   pUnk-> QueryInterface(IID_IEnumVARIANT,(void**)&pEnum); 
                        
            if(pEnum) 
                        { 
                            pEnum
            -> Reset(); 
                            ULONG   fget   
            =   1
                            
            while(SUCCEEDED(hr)&&fget> 0
                            { 
                                Scripting::IFilePtr   file; 
                                _variant_t   varfile; 
                                hr   
            =   pEnum-> Next(1,&varfile,&fget); 
                                
            if(SUCCEEDED(hr)   &&   fget> 0
                                { 
                                    file   
            =              varfile.pdispVal; 
                                    BSTR   bspath; 
                                    file
            -> get_Path(&bspath); 
                                    cout 
            < < "file   path: " < <(LPCTSTR)_bstr_t(bspath) < <endl; 
                                } 
                                
            else 
                                { 
                                    cout 
            < < "   get   file     return   " < <hr < <endl; 
                                } 
                            } 
                        } 
                    } 
                } 
                
            catch(_com_error   &e) 
                { 
                     _bstr_t   bstrSource(e.Source()); 
                     _bstr_t   bstrDescription(e.Description()); 
                      cout 
            < < "Get   directory    size   via   FileSystemObject,   by    masterz " < <endl; 
                      cout 
            < < "COM   error    occurred,source: " < <(LPCTSTR)bstrSource < <endl; 
                      cout 
            < < "Description: " < <(LPCTSTR)bstrDescription < <endl; 
                } 

            CoUninitialize();
            posted on 2012-04-13 09:33 王海光 閱讀(804) 評論(0)  編輯 收藏 引用 所屬分類: C++
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