My thinking is that could could modify your code to something like (untested):

#  assumes $filename is set from Tk 

my $fh;
Win32::LongPath::openL (\$fh, '<', $filename) 
  or die "Unable to open $filename";

my $parser   = Spreadsheet::ParseXLSX->new();
my $workbook = $parser->parse($fh);

#  do stuff

[download]

openL is documented at https://metacpan.org/pod/Win32::LongPath#openL-FILEHANDLEREF,MODE,PATH

You could also check the filename can be found using testL. https://metacpan.org/pod/Win32::LongPath#testL-TYPE,PATH

This all comes with the caveat that I have not used these functions, although if it does work then it will help solve one of my own longstanding headaches with a Gtk2 application.

In reply to Re^3: Spreadsheet::ParseXLSX filename non Latin Tk getOpenFile by swl
in thread Spreadsheet::ParseXLSX filename non Latin Tk getOpenFile by IB2017

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