IFileOperation or SHFileOperation for file operations

[doctorpangloss]

Using the Windows native file copy, delete and move operations are a lot faster, especially for copying. Not sure if they can be adapted into something that makes sense for Unix behavior.

[rmyorston]

These file operations seem to be intended for use with GUI applications.

The wisdom of Stack Overflow is that they probably shouldn't be used outside the context of the Shell.

[doctorpangloss]

sounds good, perhaps the best thing to do is always use robocopy or xcopy if performance is a concern