Tk question: Dynamically disable radiobutton choices

chafelix has asked for the wisdom of the Perl Monks concerning the following question:

I am creating a dialog for comparing two files. For matching purposes, the user needs to tell the program how to handle fields (for instance excel columns). Thus, the interface needs to a) specify that column i in file A corresponds to column j in file B and b) whether these matching columns are First name, last name or neither. This is important because an exact match will be performed for last name, but a first digit match will be performed on first name, e.g. 'Tim' vs. 'Timothy' should be a match. So I am adding a radiobutton for each column with the choices 'First, last and no name'. The trick is that once there is only one 'First name' and 'last name' column, so once the user has specified that this is a first name, this option should not be available to other columns.

Apart from this, which I am not sure how to do there seem to be 2 more issues with the code below: First, the Radiobutton part seems to give a strange message Second, the Browseentry appears to be filled in the box instead of the expanding list

use Tk;
use Tk::BrowseEntry;

my $top=MainWindow->new();
 $top->title("Match Specifications");
 my @names=('Last Name','First Name','Not a name');
my $value=2;  #no name is default
my $indicator=0;#start looping over names, indicator=0=>Last, 1=>first
+, 2=>no name
%main::A={1=>['Tim','Doe','other_info1'],
2=>['Mick','Lu','other_info_2']};
%main::B={1=>['Timothy','Doe','other_info1','moreinfo1'],
2=>['Michail','Lu','other_info_2','moreinfo2']};
$main::headers[0]=['F','L','O']; $main::headers[1]=['M','J','P','JJ'];
my $fr=$top->Frame(-relief=>'sunken')->pack(-anchor=>'nw',-fill=>'both
+'); 
my $counter0=0; 
my @selector;
my $col=0;my $colshow=0;
my @keys00=sort keys %main::A;my @keys0=();
 push @keys0,$keys00[0];
 push @keys0,$keys00[1]; 
my @keys200=sort keys %main::B;
my @keys20=();
push @keys20,$keys200[0];
 push @keys20,$keys200[1];
my $row1=0;
foreach my $el(@{$main::headers[0]}){
my $row=0;
 $selector[$col]=$fr->Scrolled('BrowseEntry',-label=>$el,-variable=>\$
+main::matchhash{$col},
-browsecmd=>[\&show,$el,\@headers2,\@keys200]);
my $h2cnt=0 ; my $h2cntall=0;
##### this is the part that must be repopulated dynamically
foreach my $el2(@{$main::headers[1]}){
$selector[$col]->insert("end", $el2);
$h2cnt++;
$h2cntall++;}#foreach el2
$selector[$col]->grid(-row=>$row,-column=>$colshow);
#### end of part to repopulate dynamically
$row++;

#row nonzero
$fr->Label(-text=>$main::A{$keys0[0]}->[$col])->grid(-row=>$row,-colum
+n=>$colshow);$row++;
$fr->Label(-text=>$main::A{$keys0[1]}->[$col])->grid(-row=>$row,-colum
+n=>$colshow);$row++;
 foreach my $name(@names){
 $fr->RadioButton( -text=>$name,-variable=>\$indicator,-value=>$value)
+->grid(-row=>$row,
-column=>$colshow);
$row++;}
             $colshow++;  $row1=$row;

                              $col++;}#foreach el
#######
$fr->Button(-text=>'Run',-bg=> 'firebrick1'     ,-command=>sub{ }    )
+->grid(-row=>$row1,-column=>1);
&MainLoop(); 
sub show{my $el=shift; my $rheaders=shift; my $rkeys=shift;
}
[download]

Comment on Tk question: Dynamically disable radiobutton choices Download Code

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Re: Tk question: Dynamically disable radiobutton choices by zentara (Cardinal) on Jul 18, 2018 at 13:02 UTC
First, make sure your code runs. Yours has an error, so always copy'n'paste a working example. `$fr->RadioButton( SHOULD BE $fr->Radiobutton(` [download] also you should have `use warnings; use strict;` [download] which would give you errors like this: `"my" variable %main::A can't be in a package at ./1218747.pl line 14, +near "my %main::A" Global symbol "@headers2" requires explicit package name (did you forg +et to declare "my @headers2"?) at ./1218747.pl line 37.` [download] Your code is hopelessly broken by you trying to setup a bizarre data structure. Where did you get the syntax for %main::A? Here are a few simple examples of manipulating BrowseEntry widgets. You can modify the @arrays to achieve your limiting of choices. Look at the BrowseEntry widget's browsecmd. Like -browsecmd => \&do_whatever to my selections. You probably don't even need radio buttons. Read more... (6 kB) I'm not really a human, but I play one on earth. ..... an animated JAPH	[reply] [d/l] [select]

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Re: Tk question: Dynamically disable radiobutton choices
by zentara (Cardinal) on Jul 18, 2018 at 13:02 UTC

$fr->RadioButton(
SHOULD BE
$fr->Radiobutton(
[download]

use warnings;
use strict;
[download]

"my" variable %main::A can't be in a package at ./1218747.pl line 14, 
+near "my %main::A"
Global symbol "@headers2" requires explicit package name (did you forg
+et to declare "my @headers2"?) at ./1218747.pl line 37.
[download]

Here are a few simple examples of manipulating BrowseEntry widgets. You can modify the @arrays to achieve your limiting of choices. Look at the BrowseEntry widget's browsecmd. Like -browsecmd => \&do_whatever to my selections. You probably don't even need radio buttons.