系统自带的文件拷贝、移动、删除和重命名操作

前言

        经常随手花上个半到一个小时，自己手写一个拷贝系统文件的代码，里面用上个几重递归，然后判断下文件属性，看是文件夹还是文件。然后自己根据文件的大小来控制进度条的显示进度。是否真的需要付出这么多了？

        最近，研究了一下windows shell编程，发现其实很多系统有的功能，系统早就做好，并且完完全全的提供给我们了，只是我们比较喜欢一步步的自己来维护每一个流程。最终导致的结果是，耽误了开发进度，同时造成了某些不可知的软件bug。

简介

        在vista之前的版本中，经常可以使用SHFileOperation这个系统函数处理类似于文件的拷贝、移动、删除和重命名操作。但vista之后的版本，系统又提供了com库接口IFileOperation的方式来处理相同的文件操作。当然以前的方法依然适用。只不过最新的文件操作方法使用起来会更加的“人性化”(后面会提到)。

内容

旧版文件操作

拷贝操作

int CEarlyFileOperator::FOCopyFile(const wstring &strFrom, const wstring &strTo){wchar_t srcPath[MAX_PATH];wchar_t dstPath[MAX_PATH];memset(srcPath,'\0',MAX_PATH);memset(dstPath,'\0',MAX_PATH);memcpy(srcPath,strFrom.c_str(),strFrom.length() * sizeof(wchar_t));memcpy(dstPath,strTo.c_str(),strTo.length() * sizeof(wchar_t));SHFILEOPSTRUCT FileOp = {0};FileOp.hwnd = NULL;// 调用过程会改变父窗口属性FileOp.wFunc = FO_COPY;// 执行文件拷贝FileOp.pFrom = srcPath;FileOp.pTo = dstPath;FileOp.hNameMappings = NULL;FileOp.fFlags = FOF_ALLOWUNDO;FileOp.lpszProgressTitle = _T("文件正在拷贝中...");int nRet = SHFileOperation(&FileOp);return nRet;}

移动操作

int CEarlyFileOperator::FORemoveFile(const wstring &strFrom, const wstring &strTo){wchar_t srcPath[MAX_PATH];wchar_t dstPath[MAX_PATH];memset(srcPath,'\0',MAX_PATH);memset(dstPath,'\0',MAX_PATH);memcpy(srcPath,strFrom.c_str(),strFrom.length() * sizeof(wchar_t));memcpy(dstPath,strTo.c_str(),strTo.length() * sizeof(wchar_t));SHFILEOPSTRUCT FileOp = {0};FileOp.hwnd = NULL;// 调用过程会改变父窗口属性FileOp.wFunc = FO_MOVE;// 执行文件拷贝FileOp.pFrom = srcPath;FileOp.pTo = dstPath;FileOp.hNameMappings = NULL;FileOp.fFlags = FOF_ALLOWUNDO | FOF_NOCONFIRMATION | FOF_NOCONFIRMMKDIR;//FileOp.lpszProgressTitle = _T("文件正在拷贝中...");int nRet = SHFileOperation(&FileOp);return nRet;}

删除操作

int CEarlyFileOperator::FODelFile(const wstring &strFrom){wchar_t srcPath[MAX_PATH];memset(srcPath,'\0',MAX_PATH);memcpy(srcPath,strFrom.c_str(),strFrom.length() * sizeof(wchar_t));SHFILEOPSTRUCT FileOp = {0};FileOp.hwnd = NULL;FileOp.wFunc = FO_DELETE;FileOp.pFrom = srcPath;FileOp.pTo = NULL;FileOp.hNameMappings = NULL;FileOp.fFlags = FOF_ALLOWUNDO;//允许撤销，不出现确认对话框int nRet = SHFileOperation(&FileOp);return nRet;}

重命名操作

int CEarlyFileOperator::FORenameFile(const wstring &strFrom, const wstring &strRename){wchar_t srcPath[MAX_PATH];wchar_t reName[MAX_PATH];memset(srcPath,'\0',MAX_PATH);memset(reName,'\0',MAX_PATH);// 获取路径地址wstring strPath = strFrom.substr(0,strFrom.rfind(_T("\\")));wstring strTo = strPath + _T("\\") + strRename;memcpy(srcPath,strFrom.c_str(),strFrom.length() * sizeof(wchar_t));memcpy(reName,strTo.c_str(),strTo.length() * sizeof(wchar_t));SHFILEOPSTRUCT FileOp = {0};FileOp.hwnd = NULL;// 调用过程会改变父窗口属性FileOp.wFunc = FO_RENAME;// 执行文件拷贝FileOp.pFrom = srcPath;FileOp.pTo = reName;FileOp.hNameMappings = NULL;FileOp.fFlags = FOF_ALLOWUNDO | FOF_NOCONFIRMATION;int nRet = SHFileOperation(&FileOp);return nRet;}

新版文件操作

拷贝操作

int CLaterFileOperator::FOCopyFile(const wstring &strFrom, const wstring &strTo){HRESULT hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED | COINIT_DISABLE_OLE1DDE); if (SUCCEEDED(hr)){IFileOperation *pfo;///< Create the IFileOperation interfacehr = CoCreateInstance(CLSID_FileOperation, NULL, CLSCTX_ALL, IID_PPV_ARGS(&pfo));if (SUCCEEDED(hr)){///< Set the operation flagshr = pfo->SetOperationFlags(FOF_ALLOWUNDO);if (SUCCEEDED(hr)){///< Create an IShellItem from the supplied source pathIShellItem *psiFrom = NULL;hr = SHCreateItemFromParsingName(strFrom.c_str(), NULL, IID_PPV_ARGS(&psiFrom));if (SUCCEEDED(hr)){///< Create an IShellItem from the supplied destination path.IShellItem *psiTo = NULL;hr = SHCreateItemFromParsingName(strTo.c_str(), NULL, IID_PPV_ARGS(&psiTo));if (SUCCEEDED(hr)){hr = pfo->CopyItem(psiFrom, psiTo, NULL, NULL);if (NULL != psiTo){psiTo->Release();}}psiFrom->Release();}if (SUCCEEDED(hr)){hr = pfo->PerformOperations();} }pfo->Release();}CoUninitialize();}return hr;}

移动操作

int CLaterFileOperator::FORemoveFile(const wstring &strFrom, const wstring &strTo){HRESULT hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED | COINIT_DISABLE_OLE1DDE); if (SUCCEEDED(hr)){IFileOperation *pfo;///< Create the IFileOperation interfacehr = CoCreateInstance(CLSID_FileOperation, NULL, CLSCTX_ALL, IID_PPV_ARGS(&pfo));if (SUCCEEDED(hr)){///< Set the operation flagshr = pfo->SetOperationFlags(FOF_ALLOWUNDO | FOF_NOCONFIRMATION | FOF_NOCONFIRMMKDIR);if (SUCCEEDED(hr)){///< Create an IShellItem from the supplied source pathIShellItem *psiFrom = NULL;hr = SHCreateItemFromParsingName(strFrom.c_str(), NULL, IID_PPV_ARGS(&psiFrom));if (SUCCEEDED(hr)){///< Create an IShellItem from the supplied destination path.IShellItem *psiTo = NULL;hr = SHCreateItemFromParsingName(strTo.c_str(), NULL, IID_PPV_ARGS(&psiTo));if (SUCCEEDED(hr)){hr = pfo->MoveItem(psiFrom, psiTo, NULL, NULL);if (NULL != psiTo){psiTo->Release();}}psiFrom->Release();}if (SUCCEEDED(hr)){hr = pfo->PerformOperations();} }pfo->Release();}CoUninitialize();}return hr;}

删除操作

int CLaterFileOperator::FODelFile(const wstring &strFrom){HRESULT hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED | COINIT_DISABLE_OLE1DDE); if (SUCCEEDED(hr)){IFileOperation *pfo;///< Create the IFileOperation interfacehr = CoCreateInstance(CLSID_FileOperation, NULL, CLSCTX_ALL, IID_PPV_ARGS(&pfo));if (SUCCEEDED(hr)){///< Set the operation flagshr = pfo->SetOperationFlags(FOF_ALLOWUNDO);if (SUCCEEDED(hr)){///< Create an IShellItem from the supplied source pathIShellItem *psiFrom = NULL;hr = SHCreateItemFromParsingName(strFrom.c_str(), NULL, IID_PPV_ARGS(&psiFrom));if (SUCCEEDED(hr)){hr = pfo->DeleteItem(psiFrom, NULL);psiFrom->Release();}if (SUCCEEDED(hr)){hr = pfo->PerformOperations();} }pfo->Release();}CoUninitialize();}return hr;}

重命名操作

int CLaterFileOperator::FORenameFile(const wstring &strFrom, const wstring &strRename){HRESULT hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED | COINIT_DISABLE_OLE1DDE); if (SUCCEEDED(hr)){IFileOperation *pfo;///< Create the IFileOperation interfacehr = CoCreateInstance(CLSID_FileOperation, NULL, CLSCTX_ALL, IID_PPV_ARGS(&pfo));if (SUCCEEDED(hr)){///< Set the operation flagshr = pfo->SetOperationFlags(FOF_ALLOWUNDO | FOF_NOCONFIRMATION);if (SUCCEEDED(hr)){///< Create an IShellItem from the supplied source pathIShellItem *psiFrom = NULL;hr = SHCreateItemFromParsingName(strFrom.c_str(), NULL, IID_PPV_ARGS(&psiFrom));if (SUCCEEDED(hr)){hr = pfo->RenameItem(psiFrom, strRename.c_str(), NULL);psiFrom->Release();}if (SUCCEEDED(hr)){hr = pfo->PerformOperations();} }pfo->Release();}CoUninitialize();}return hr;}