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Asked: 2026-05-23T17:14:29+00:00

I’m trying to make DuplicateHandle() for a file that another process writes. I succeeded,

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I’m trying to make DuplicateHandle() for a file that another process writes. I succeeded, but I get the position of the owner process. After I seek to the beginning it seeks also in the owner process. Can I somehow seek without changing the first process’s progress?

EDIT:

Another application opens this file without CreateFile. Is thare a way to read the file form the begining with ReadFile, without seeking manually?

EDIT again:

There isn’t a way to read only from one side with duplicated handle. Thanks for helping.

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1 Answer

  1. Editorial Team

    From MSDN:

    The duplicate handle refers to the same object as the original handle. Therefore, any changes to the object are reflected through both handles. For example, if you duplicate a file handle, the current file position is always the same for both handles. For file handles to have different file positions, use the CreateFile function to create file handles that share access to the same file.

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