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#!/usr/bin/perl -w
# $Id: preProcess,v 1.2 2002/07/27 20:11:17 tom Exp $
#
# Purpose:
# To demonstrate the preProcess method.
#
# Load in the Cdk Extension.
#
use Cdk;
Cdk::init();
# Create a new entry object.
my $title = ["", "Type in anything but the dreaded letter 'G'!", ""];
my $entry = new Cdk::Entry ('Label' => "Type Anything: ",
'Title' => $title,
'Width' => 20,
'Min' => 0,
'Max' => 256);
# Set up the pre and post processing.
$entry->preProcess ('Function' => sub {preProcessCB (@_, $entry);});
# Activate the object.
my $info = $entry->activate();
# Check the results.
if (!defined $info)
{
popupLabel (["<C>You hit escape, nothing returned."]);
}
else
{
popupLabel (["<C>You typed in ($info)"]);
}
# Exit Cdk.
Cdk::end();
#
# This example will set the pre process function so it
# will not accept the letter g.
#
sub preProcessCB
{
my ($input, $entry) = @_;
# Check the letter.
if (uc $input eq "G")
{
Cdk::Beep();
popupLabel (["<C>I Told You </B>NOT<!B> To Do That"]);
$entry->draw();
return 0;
}
return 1;
}
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