Hi ,
The Tk::Listbox behaves in way so that even if you click on the empty bottom area, the last element in the list gets selected. How can I chanhe this so that if I explicitly click on a element then only it will get selected otherwise not.
In the following code $selectedIndex is coming as 4 if I click on the empty bottom area of the Listbox. By checking the $selectIndex value I want to know whether I have clicked on an element or on the empty area. How can I do that ?

Also according to CPAN :

$listbox->nearest(y) Given a y-coordinate within the listbox window, this command returns the index of the (visible) listbox element nearest to that y-coordinate.

Please help me how can I then achieve my objective ? 


use Tk;
my $mw = MainWindow ->new ;

my $listFrame  = $mw->Frame->pack;


my $listBox = $listFrame->Scrolled(
                        'Listbox',
                        -scrollbars        => 'osoe',
                        -selectmode        => 'extended', 
                        -background        => 'white',
                        -height            => 10, 
                        -width             => 10, 
                        -selectborderwidth => 0,
                        -relief            => 'flat', )->pack;


$listBox->insert('end', qw/red yellow green blue grey/);



$listBox->bind('<Button-1>', sub { 

my @elements = $listBox->curselection ;
my $rooty           = $listBox->rooty;
my $y               = $Tk::event->Y - $rooty;
my $selectedIndex   = $listBox->nearest( $y );
my $selectedElement = $elements[$selectedIndex];
print "rooty $rooty \n";
print "elements @elements |selectedIndex $selectedIndex |selectedEleme
+nt $selectedElement \n";


}
);

MainLoop;

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In reply to How to determine if nothing is selected in a listbox by simonz

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