Handling FileMode Create in CreateFile

[mr.c...@gmail.com]

When CreateFile receives a FileMode of Create, the documentation says that the file should be truncated if it already exists.  This looks like something that I need to handle myself since SetEndOfFile is not called in this case.  

My question is, when should I truncate the file?

1. If the CreateFile call is successful, truncate the file there.
2. Wait until WriteFile is called and truncate it before setting the new bytes.

Any help is greatly appreciated.

Thanks,

Brian

[Adrien JUND]

Hi Brian,

The file needs to be directly truncated during the CreateFile call when you see that it is a success.

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[mr.c...@gmail.com]

Thank you!