Thanks for the comments so far. While I haven't solved my problem yet, I have learned more about CGI.pm. My script: 
#! /perl/bin/perl -w

use strict;
use CGI();
use DBI;
use Data::Dumper;
use CGI::Carp qw(fatalsToBrowser warningsToBrowser);
use LC::SchemaClassMaker;
use LC::DBMaint;

my $file_in = '/web/lc/perllib/schema.xm';
my $drh = 'dbi:CSV:f_dir=/web/lc/database';
my $dbh = DBI->connect($drh);

my $cm = LC::SchemaClassMaker->new({
      schema_filename => $file_in
    , base_class => 'LC::PersistentSQL'
    , dbh => $dbh
    , class_prefix => 'XT'
});

my $tm = LC::DBMaint->new({
      dbc_classname => 'XT::book'
});

$tm->set_attr('default', 'widgets', {
      review => {widget => 'scrolling_list'}
    , author => {widget => 'scrolling_list'}
});
$tm->execute;
my $header_args = $tm->get_cookie ? {-cookie => $tm->get_cookie} : {};
print CGI::header($header_args), CGI::start_html();
print $tm->default_html();
print CGI::end_html();

[download]
There is are no references to CGI.pm in LC::SchemaClassMaker.

LC::DBMaint does a use CGI(); and makes several non-OO calls (CGI::funcname), including calls to param, cookie, script_name, script and various HTML-generating methods.

This module also instantiates several XT::book objects whose class are generated by SchemaClassMaker and whose methods are all inherited from a base class, LC::PersistentSQL (which has no CGI references) but inherits from a class LC::Persistent which is similar to LC::DBMaint in its use of CGI: use CGI; and several non-OO calls to param and HTML-generating functions.

(In the event you see typos, etc. in the above, this does work fine under vanilla CGI scripting.

In reply to Re: CGI.pm not returning POSTed param w/mod_perl by voyager
in thread CGI.pm not returning POSTed param w/mod_perl by voyager

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