MR2v1 - kernelbase: Add support for progress callback in CopyFileEx.

[Nikolay Sivov (@nsivov)]

Nikolay Sivov (@nsivov) commented about dlls/kernelbase/file.c:
> +        return TRUE;
> +
> +    cbret = (*callback)( size, transferred, size, transferred, 1, cbtype, src, dest, param );
> +    if (cbret == PROGRESS_QUIET)
> +    {
> +        *callback = NULL;
> +        return TRUE;
> +    }
> +    else if (cbret == PROGRESS_CANCEL)
> +    {
> +        FILE_DISPOSITION_INFORMATION fdi;
> +        IO_STATUS_BLOCK io;
> +
> +        fdi.DoDeleteFile = TRUE;
> +        NtSetInformationFile(dest, &io, &fdi, sizeof(fdi), FileDispositionInformation);
> +    }
>From what I can tell this does not work. You'll need delete access on dest handle, which according to the test you can't have. Please make sure you don't need to undo last DeleteFile() test.

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https://gitlab.winehq.org/wine/wine/-/merge_requests/2#note_405