I'm not sure what Urdu actually looks like, but can't you just reverse the text, line by line, before inserting it into the text widget? 
#!/usr/bin/perl
use warnings;
use strict;

my $a1= "I sit here and think ?";
print "$a1\n";
my $b1 =  reverse $a1;
print "$b1\n";

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I'm not really a human, but I play one on earth. flash japh

In reply to Re: right to left Tk text widget by zentara
in thread right to left Tk text widget by davidj

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