Specifically,
    my $fn = @_;
initializes  $fn with the number of elements in the  @_ array (array evaluated in scalar context). What is almost certainly wanted is
    my ($fn) = @_;
or better yet
    my $fn = shift;
to initialize  $fn with the first element (index 0) of the array, Update: which, in this case, is an object reference by which an object method is called.

In reply to Re^2: Issue destroying image using perl/TK by AnomalousMonk
in thread Issue destroying image using perl/TK by nikwasi

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