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CopyFileEx info  Overview  Group

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

   );

Parameters

lpExistingFileName
Points to a null-terminated string that specifies the name of an existing file.
lpNewFileName
Points to a null-terminated string that specifies the name of the new file.
lpProgressRoutine
Specifies 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.
lpData
Specifies an argument to be passed to the callback function. This parameter can be NULL.
pbCancel
Points 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.
dwCopyFlags
Specifies 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 Values

If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information call GetLastError.

Remarks

For information on file attributes, see CreateFile.

See Also

CreateFile, CopyFile, CopyProgressRoutine, MoveFile

See also:


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