Hi Monks, I have currently developed a perl file to convert Celsius to Fahrenheit. The code looks like this 

#!/usr/local/bin/perl
use Tk;

my $mw = new MainWindow; # Main Window

my $VARIABLE;

my $frm_name = $mw -> Frame() -> pack();
my $lab = $frm_name -> Label(-text=>"Enter Celsius Value:") -> pack();
my $ent = $frm_name -> Entry(-textvariable=>\$VARIABLE) -> pack();


my $but = $mw -> Button(-text=>"Push Me", -command =>\&push_button) ->
+ pack();
#Text Area
my $frm_name2 = $mw -> Frame() -> pack();
my $lab2 = $frm_name2 -> Label(-text=>"Farienhiet:") -> pack();
my $txt = $mw -> Text(-width=>40, -height=>10) -> pack();

MainLoop;

#This function will be executed when the button is pushed
sub push_button {
        $txt->delete("1.0", 'end');
    my $celsius = $ent -> get();
    my $farienhiet = ($celsius*9/5)+32;
    $txt -> insert('end', "Farienhiet is $farienhiet degrees.");
}

[download]

I want the user to enter the number of values for which he wants to do Celsius to Fahrenheit. Assume he wants to convert 1 celcius value to fareinhiet, my code works. If he wants to convert 4 or 5 or 6, my code will not be able to do that. I want to let the user decide the number of values of celcius he wants to enter. Is this possible.

I was thinking of implementing a scale, like

my $scl = $mw -> Scale(-label=>"No of Celcius Values to convert :",
     -orient=>'v',         -digit=>1,
     -from=>1,        -to=>10,
     -variable=>\$celcius,    -tickinterval=>2);

[download]

where the user can select any number of values from 1-10. If he selects 1, the grid can have one text location to enter and one text output, if he selects 2, then the grid will have 2 locations to enter text and 2 locations to show the fareinheit value and so on. Is this possible? Your help is greatly appreciated.

In reply to perl TK: Dynamically changing number of inputs at run time. by Ganesh Bharadwaj1

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