I have something that I do understand about what is given for the selected cell in a table matrix.
The Perl below creates a table matrix and the sub brscmd is used whenever a cell is slected using either the left hand mouse key or the up/down and left/right keys on the key board.
The selected cell is obtained in two ways. These are
1. from the ‘standard’ argument to the browse sub;
2. using $t->curselection() where $t is the table matrix.
Both values are printed out.
When I use the left hand mouse key both values are the same.
When I use the keyboard keys, the value from curselection always seems to be that for the previous selection of a cell.
Is this how it should be or is there something I can do to ensure I always get the same values whatever method I use to select cells in a table matrix? 
use Tk;
use Tk::TableMatrix;
my $mw = MainWindow->new;
my $arrayVar = {};
print "Filling Array...\n";
my ($rows,$cols) = (10, 10);
 foreach my $row  (0..($rows-1)){
    foreach my $col (0..($cols-1)){
      $arrayVar->{"$row,$col"} = 2*$row + 3*$col;
   }
}
print "Creating Table...\n";
 my $t = $mw->Scrolled('TableMatrix', -rows => $rows, -cols => $cols,
 -width => 10, -height => 10,
 -titlerows => 1, -titlecols => 1,
 -variable => $arrayVar,
 -coltagcommand => \&colSub,
 -browsecommand => \&brscmd,
 -colstretchmode => 'last',
 -rowstretchmode => 'last',
 -selectmode => 'extended',
 -selecttitles => 0,
 -drawmode => 'slow',
 -scrollbars=>'se'
 );

$t->pack(-expand => 1, -fill => 'both');
Tk::MainLoop;

sub brscmd {
my ($previous_index, $actual_index) = @_;
my ($row, $col) = split ',', $actual_index;
my ($sel, $js);

my $sel =  $t->curselection();

foreach $js (@$sel) {
    print "\n[brscmd] actual index <$actual_index> from curselection <
+$js>\n";
}
}

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In reply to Table matrix suspected selected cell discrepancy by merrymonk

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