File copy, movement, deletion, and rename operations provided by the system

Preface it often takes about half an hour to manually copy the code of the system file. It uses a number of recursion operations to determine the file attributes and check whether it is a folder or a file. Then, you can control the progress of the progress bar based on the file size. Do you really need to pay so much?

Recently, I have studied windows shell programming and found that many of the functions of the system have been well developed and completely provided to us, but we prefer to maintain every process step by step. The final result is that the development progress is delayed and some unknown software bugs occur.

In versions earlier than vista, The SHFileOperation system function is often used to process operations similar to copying, moving, deleting, and renaming objects. However, in Versions later than vista, the system provides the com library interface IFileOperation to process the same file operations. Of course, the previous method still applies. However, the latest file operation method will be more user-friendly (will be mentioned later ).

Content
Copy old files

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; // The Calling process changes the parent window attribute FileOp. wFunc = FO_COPY; // execute the file copy FileOp. pFrom = srcPath; FileOp. pTo = dstPath; FileOp. hNameMappings = NULL; FileOp. fFlags = FOF_ALLOWUNDO; FileOp. lpszProgressTitle = _ T ("the file is being copied... "); int nRet = SHFileOperation (& FileOp); return nRet ;}

Mobile Operations

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; // The Calling process changes the parent window attribute FileOp. wFunc = FO_MOVE; // execute the file copy FileOp. pFrom = srcPath; FileOp. pTo = dstPath; FileOp. hNameMappings = NULL; FileOp. fFlags = FOF_ALLOWUNDO | FOF_NOCONFIRMATION | FOF_NOCONFIRMMKDIR; // FileOp. lpszProgressTitle = _ T ("the file is being copied... "); int nRet = SHFileOperation (& FileOp); return nRet ;}

Delete operation

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; // undo allowed. The confirmation dialog box int nRet = SHFileOperation (& FileOp); return nRet;} is not displayed ;}

RENAME operation

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); // obtain the path address 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; // The Calling process changes the parent window attribute FileOp. wFunc = FO_RENAME; // execute the file copy FileOp. pFrom = srcPath; FileOp. pTo = reName; FileOp. hNameMappings = NULL; FileOp. fFlags = FOF_ALLOWUNDO | FOF_NOCONFIRMATION; int nRet = SHFileOperation (& FileOp); return nRet ;}

New file copy operations

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;}

Mobile Operations

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;}

Delete operation

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;}

RENAME operation

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;}