Running Perl/Tk under Windows/XP. Tried to bind a key to a subroutine call with an argument, but it didn't work. Here is stripped-down code: 


use Tk;

sub print_args
{
   $ix = 0;
   foreach $arg (@_)
   {
      print "ARG $ix = $arg \n";
      $ix++;
   }
   print "------------------\n";
}

   $mw = MainWindow -> new ();
   $mw -> title ("Test bind with parms");
   $fill = $mw -> Label (-text => "TEST BIND - try both button and dow
+n arrow") 
               -> pack ();

   $quit_but = $mw -> Button (-text       => "QUIT",
                              -background  => "#ffffcc",
                              -borderwidth => 5,
                              -relief      => ridge,
                              -command     => sub{exit})
                       -> pack  (-side        => bottom,
                                 -fill        => "x");

   $test_but = $mw -> Button (-text       => "Invoke via button",
                              -background  => "#ddffff",
                              -borderwidth => 5,
                              -relief      => ridge,
              -command     => [ \&print_args, 3, 2, 11 ] )
                       -> pack  (-side        => bottom,
                                 -fill        => "x");


   $mw -> bind ('<Key-Down>'    => 
                              [ \&print_args, 3, 2, 11 ]);

   MainLoop;

[download]
When I press the button, I get this (as expected): 
ARG 0 = 3 
ARG 1 = 2 
ARG 2 = 11 
------------------

[download]
But when I press the down arrow: 
ARG 0 = MainWindow=HASH(0x2c5c1cc) 
ARG 1 = 3 
ARG 2 = 2 
ARG 3 = 11

[download]
Oops? Known bug??

In reply to Bind mishandles arguments by Anonymous Monk

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