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Does CopyFile and CopyFileEx work if the source file is open?

I want to call the copyFile function from the source file that I want to copy. The VBA FileCopy function does not allow you to open the source file while it is being copied. I am thinking of using CopyFile or CopyFileEx (to show a progress bar).

Therefore, do these functions work if the source file is open?

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Yes, CopyFileEx () has a COPY_FILE_OPEN_SOURCE_FOR_WRITE parameter that allows you to copy a file that has been opened for writing. You still need cooperation from the owner of the file, he would have to open a file that allows access to read.

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Source: https://habr.com/ru/post/1736356/

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