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Editorial Team
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Asked: 2026-05-14T14:29:59+00:00

The Windows API function CopyFile has an argument BOOL bFailIfExists that allows you to

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The Windows API function CopyFile has an argument BOOL bFailIfExists that allows you to control whether or not you want to overwrite the target file if it exists.

The boost::filesystem copy_file function has no such argument, and will fail if the target file exists. Is there an elegant way to use the boost copy_file function and overwrite the target file? Or is it better to simply use the Windows API? My current target platform is Windows, but I prefer to use STL and boost where possible to keep my code platform independent.

Thank you.

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1 Answer

  1. Editorial Team

    There’s a third enum argument to copy_file, boost::filesystem::copy_option::overwrite_if_exists

    copy_file(source_path, destination_path, copy_option::overwrite_if_exists);

    https://www.boost.org/doc/libs/1_75_0/libs/filesystem/doc/reference.html

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