You could use Tk::TableMatrix::Spreadsheet to present your spreadsheet to the user and add a button "Save" to store it as you do now.
my $ss = $mw->Scrolled ('Spreadsheet',
-rows => $h, -cols => $w,
-width => 10, -height => 20,
-titlerows => 1, -titlecols => 0,
-selectmode => "extended",
-resizeborders => "both",
-justify => "left",
-anchor => "w",
-variable => $data,
)->pack (-expand => 1, -fill => "both", -side => "top", -anchor =>
+ "nw");
$ss->Subwidget ("${_}scrollbar")->configure (-width => 6) for qw( x y
+);
$ss->tagConfigure ("title", -bg => "#ffffe0", -justify => "left");
$ss->tagConfigure ("active", -bg => "#ffff40", -justify => "left");
$ss->tagConfigure ("sel", -bg => "gray95", -justify => "left");
# autosize columns on data (not on headers)
$ss->colWidth (map { $_ => $w[$_] } 0 .. $#w);
Enjoy, Have FUN! H.Merijn
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