Re: widget box problem in tk

... Reopen it using same button It neither Deletes previous entry nor takes new Entry ...

Yup, typical coping with scoping issue ( life cycle of variables ), see lots and lots links in Re^2: Perl Gtk2 - ->destroy() is Not Causing the Script to Exit

links like Re^2: Border-less main window (Alt+F4 Ctrl+C , Re: Perk Tk - how to send a value from a subroutine back to the main program using Button (without MainLoop), Re: Perl tk FindNext in a text widget, Confused by variable scope in Tk::Wizard

Then write Tk callbacks all lexically scoped and not-memory leaking with no nested subs ever :) avoid nested subs and closures because nested named subs because they're closures

Also, meaningful variable/function names are good :)

Here is your program slightly fixed up (so it doesn't error message), could use more fixing (for readability/understandability...) ... if you don't understand the changes I made start with a pencil & paper description of your program:)

#!/usr/bin/perl --
#~  
#~  2014-05-11-19:59:34
#~  
## perltidy -olq  -csc -csci=10 -cscl="sub : BEGIN END if " -otr -opr 
+-ce -nibc -i=4 -pt=0   "-nsak=*"
#!/usr/bin/perl --
use Tk;
use strict;
Main( @ARGV );
exit( 0 );

sub Main {

    my $mw = MainWindow->new;
    $mw->geometry( "200x300" );
    $mw->title( "MAIN WINDOW" );
    my $button_frame1 = $mw->Frame()->pack( -side => "top" );
    $button_frame1->Button( -text => "GI EXTRACTOR", -command => \&win
+dow1 )
      ->pack();

    MainLoop;
} ## end sub Main

sub window1 {
    my $mw = MainWindow->new;
    $mw->geometry( "700x700" );
    $mw->title( "GI EXTRACTOR WINDOW" );

    my $button_frame1 = $mw->Frame()->pack( -side => "top" );

    my $lname1;    ## eew var name:)

#~     $button_frame1->Button(-text => "Browse File", -command => \&up
+date_output1)->pack(-side => "top");
    $button_frame1->Button(
        -text    => "Browse File",
        -command => [ \&update_output1, $mw, \$lname1 ]
    )->pack( -side => "top" );

    my $bf1 = $mw->Frame()->pack( -side => "top" );
    $bf1->Label( -text => "You Have Selected The Following File" )
      ->pack( -side => "left" );
    $bf1->Entry( -bg => 'red', -textvariable => \$lname1 )
      ->pack( -side => "left" );

    my $b_f1 = $mw->Frame()->pack( -side => "top" );

#~     $b_f1->Button(-text => "Ok", -command => \&u_o1)->pack(-side =>
+ "bottom");

    my $output_frame1 = $mw->Frame()->pack( -side => "bottom" );
    my $output_scroll1 = $output_frame1->Scrollbar();
    my $output_text1 =
      $output_frame1->Text( -yscrollcommand => [ 'set', $output_scroll
+1 ] );
    $output_scroll1->configure( -command => [ 'yview', $output_text1 ]
+ );
    $output_scroll1->pack( -side => "right", -expand => "no", -fill =>
+ "y" );
    $output_text1->pack();
    $b_f1->Button(
        -text    => "Ok",
        -command => [ \&u_o1, $output_text1, \$lname1 ]
    )->pack( -side => "bottom" );
} ## end sub window1

sub update_output1 {

#~         my $button_frame1 = $mw->getOpenFile();
#~     my $button_frame1 = shift( @_ )->getOpenFile();
    my( $mmmwww, $lnameref ) = @_;
    my $button_frame1 = $mmmwww->getOpenFile();
    $$lnameref = $button_frame1;
}

sub u_o1 {
    my( $output_text1, $lnameref ) = @_;
    my $output1;
    use autodie;

#~     open( FH, "<$lname1" );
    open my( $fh ), '<', $$lnameref;
    while( my $_ = <FH> ) {
        if( $_ =~ /^>gi/ ) {
            my @arr = split( /\|/, $_ );
            $output1 = $arr[0] . $arr[1];
        }

    }
    close( $fh );

    $output_text1->delete( '0.0', 'end' );
    $output_text1->insert( "end", $output1 );
} ## end sub u_o1
[download]

Hoping for a good reply with some example code coz I searching for this problem since last 5 hour please help

I'd be very interested to learn what keywords you searched for

Comment on Re: widget box problem in tk Download Code

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Re^2: widget box problem in tk
by prince26121991 (Novice) on May 12, 2014 at 04:25 UTC

 open my( $fh ), '<', $$lnameref;
    while( my $_ = <FH> )
[download]

 open my( $fh ), '<', $$lnameref;
    while( my $_ = <$fh> )
[download]

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