用CopyFileExCopyFileEx [New - Windows NT]The CopyFileEx function copies an existing file to a new file. This function preserves extended attributes, OLE structured storage, NTFS alternate data streams, and file attributes. Security attributes for the existing file are not copied to the new file.BOOL CopyFileEx( LPCWSTR lpExistingFileName, // pointer to name of an existing file LPCWSTR lpNewFileName, // pointer to filename to copy to LPPROGRESS_ROUTINE lpProgressRoutine, // pointer to the callback function LPVOID lpData, // to be passed to the callback function LPBOOL pbCancel, // flag that can be used to cancel the operation DWORD dwCopyFlags // flags that specify how the file is copied ); ParameterslpExistingFileNamePoints to a null-terminated string that specifies the name of an existing file.lpNewFileNamePoints to a null-terminated string that specifies the name of the new file.lpProgressRoutineSpecifies the address of a callback function of type LPPROGRESS_ROUTINE that is called each time another portion of the file has been copied. This parameter can be NULL. For more information on the progress callback function, see CopyProgressRoutine.lpDataSpecifies an argument to be passed to the callback function. This parameter can be NULL.pbCancelPoints to a Boolean variable that can be used to cancel the operation. If this flag is set to TRUE during the copy operation, the operation is canceled.dwCopyFlagsSpecifies how the file is to be copied. This parameter can be a combination of the following values:Value Meaning COPY_FILE_FAIL_IF_EXISTS The copy operation fails immediately if the target file already exists. COPY_FILE_RESTARTABLE Progress of the copy is tracked in the target file in case the copy fails. The failed copy can be restarted at a later time by specifying the same values for lpExistingFileName and lpNewFileName as those used in the call that failed. Return ValuesIf the function succeeds, the return value is nonzero. If the function fails, the return value is zero. To get extended error information call GetLastError.ResFor information on file attributes, see CreateFile.See AlsoCreateFile, CopyFile, CopyProgressRoutine, MoveFile
LPCWSTR lpNewFileName, // pointer to filename to copy to
LPPROGRESS_ROUTINE lpProgressRoutine, // pointer to the callback function
LPVOID lpData, // to be passed to the callback function
LPBOOL pbCancel, // flag that can be used to cancel the operation
DWORD dwCopyFlags // flags that specify how the file is copied
);
ParameterslpExistingFileNamePoints to a null-terminated string that specifies the name of an existing file.lpNewFileNamePoints to a null-terminated string that specifies the name of the new file.lpProgressRoutineSpecifies the address of a callback function of type LPPROGRESS_ROUTINE that is called each time another portion of the file has been copied. This parameter can be NULL. For more information on the progress callback function, see CopyProgressRoutine.lpDataSpecifies an argument to be passed to the callback function. This parameter can be NULL.pbCancelPoints to a Boolean variable that can be used to cancel the operation. If this flag is set to TRUE during the copy operation, the operation is canceled.dwCopyFlagsSpecifies how the file is to be copied. This parameter can be a combination of the following values:Value Meaning
COPY_FILE_FAIL_IF_EXISTS The copy operation fails immediately if the target file already exists.
COPY_FILE_RESTARTABLE Progress of the copy is tracked in the target file in case the copy fails. The failed copy can be restarted at a later time by specifying the same values for lpExistingFileName and lpNewFileName as those used in the call that failed.
Return ValuesIf the function succeeds, the return value is nonzero.
If the function fails, the return value is zero. To get extended error information call GetLastError.ResFor information on file attributes, see CreateFile.See AlsoCreateFile, CopyFile, CopyProgressRoutine, MoveFile