This one is a little different, and the code is a little sloppy.

=head1 NAME

Wx::HexOrRgb - a Wx Dialog/App for converting color from/to hex/rgb

=head1 SYNOPSIS

    perl -MWx::HexOrRgb -e Wx::HexOrRgb::App->new()->MainLoop()

    # or

    use Wx::HexOrRgb;
    Wx::HexOrRgb::App->new()->MainLoop();

    # or even

    require Wx::HexOrRgb;
    system $^X, $INC{'Wx/HexOrRgb.pm'};

    # or the oneliner version (quotes may vary ;)

    perl -mWx::HexOrRgb -e"system $^X, $INC{q{Wx/HexOrRgb.pm}};"

    # -m is equivalent to use Wx::HexOrRgb(); in case you was wonderin
+g

=head1 DESCRIPTION

Run it as a standalone app, or embed it easily into any wxPerl
application, cause you never know when it might come in handy
to convert between rgb and hex

You probably got Wx::HexOrRgb from
http://perlmonks.com/index.pl?node_id=194166

$Id: HexOrRgb.pm,v 1.6 2002/08/25 13:00:26 _ Exp $

=cut

package Wx::HexOrRgb;

use Wx qw( :everything ); 
use Wx::Event qw( EVT_RIGHT_DOWN EVT_SLIDER EVT_BUTTON );

use base qw( Wx::Frame );
use vars qw( $VERSION );

use strict;

$VERSION =  1.60;

sub new {
    my $class  = shift;
    my $SIZE = [450,250]; 
    my $self = $class->SUPER::new(
        undef, -1,
        "Wx::HexOrRgb - you know what it is ;)",
        [ 50, 50],
        $SIZE,
        wxSIMPLE_BORDER # as perl boo_radley's instruction
#        | wxTHICK_FRAME # allows for resizability -- i don't want tah
+t
        | wxSYSTEM_MENU 
        | wxCAPTION
        | wxSYSTEM_MENU
        | wxMINIMIZE_BOX 
        | wxCLIP_CHILDREN, # removes flicker (windows only)
    );

    $self->SetIcon( Wx::GetWxPerlIcon() );

    my $p = Wx::Panel->new( $self, -1, [50,50], $SIZE, );

    $self->GUI($p);  ## and we construct the dialog


    EVT_RIGHT_DOWN( $self,  \&OnAbout );
    EVT_RIGHT_DOWN( $p,  \&OnAbout );

    EVT_BUTTON( $self, $self->ID('HEX2RGB_BUTTON'), \&OnHEX );
    
    EVT_SLIDER( $self, $self->ID('B_SLIDER'), sub {
        my( $self, $event ) = @_;

        my $pos = $event->GetInt;

        $self->ThePair('B',$pos);

        my $BL = $self->FindWindow( $self->ID('B_LINE') );

        $BL->Refresh();
        $BL->SetForegroundColour( new Wx::Colour(0, 0, $pos ) );
        $BL->SetBackgroundColour( new Wx::Colour(0, 0, $pos ) );
        $self->OnRGB(undef, undef, $pos );

## $event->GetPosition; # since it's not a WxScrollEvent GetInt'll do
    });


    EVT_SLIDER( $self, $self->ID('G_SLIDER'), sub {
        my( $self, $event ) = @_;

        my $pos = $event->GetInt;

        $self->ThePair( 'G', $pos );
        my $BL = $self->FindWindow( $self->ID('G_LINE') );

        $BL->Refresh();
        $BL->SetForegroundColour( new Wx::Colour(0, $pos,0 ) );
        $BL->SetBackgroundColour( new Wx::Colour(0, $pos,0 ) );
        $self->OnRGB(undef, undef, $pos );

## $event->GetPosition; # since it's not a WxScrollEvent GetInt'll do
    });


    EVT_SLIDER( $self, $self->ID('R_SLIDER'), sub {
        my( $self, $event ) = @_;

        my $pos = $event->GetInt;

        $self->ThePair( 'R', $pos );

        my $BL = $self->FindWindow( $self->ID('R_LINE') );

        $BL->Refresh();
        $BL->SetForegroundColour( new Wx::Colour($pos,0,0 ) );
        $BL->SetBackgroundColour( new Wx::Colour($pos,0,0 ) );
        $self->OnRGB(undef, undef, $pos );

## $event->GetPosition; # since it's not a WxScrollEvent GetInt'll do
    });


#    use Data::Dumper;    die Dumper $self->ID();
    for my $key( keys %{ $self->ID() } ) {
        EVT_RIGHT_DOWN( $self->FindWindow( $self->ID($key) ),  \&OnAbo
+ut );
    }

    my( $MainSizer ) = Wx::BoxSizer->new( Wx::wxHORIZONTAL );
    $MainSizer->Add( $p, 1, wxGROW );
    $self->SetSizer( $MainSizer );
    $self->SetAutoLayout( 1 ); ## ;)
    $self->Layout(); ##force layout of the children anew
    $MainSizer->Fit( $self );
    $MainSizer->SetSizeHints( $self );

#die    Wx::GetColourFromUser( $self );

    return $self;
}


#### util
sub ThePair {
    my( $self, $L, $pos ) = @_;
    $self->FindWindow( $self->ID($L.'_DEC') )->SetValue($pos);
    $self->FindWindow( $self->ID($L.'_HEX') )->SetValue(sprintf('#%02X
+',$pos));
    $self->FindWindow( $self->ID($L.'_SLIDER') )->SetValue( $pos );
}
#### THE EVENT HANDLERS
sub OnHEX {
    my( $self, $evt ) = @_;
    $_ = $self->FindWindow( $self->ID('HEX_TEXT') )->GetValue;
    my( $r, $g, $b ) = m/\#?([a-z0-9]{2})([a-z0-9]{2})([a-z0-9]{2})/i;

    unless( $r and $g and $b ) {
        Wx::MessageBox(
            "Sorry mate, missing a hex value someplace.
            ($_)
            Need 6 you know.",
            "EEEEEEEEK! Now how'd that happen?!?!?",
            wxICON_ERROR | wxOK,
            $self,
        );
        return();
    }; 


# UGH, I AM LAME!!!
#    for ( $r, $g, $b ) {
#        $_ = hex $_;
#    }

    ( $r, $g, $b ) = map hex, $r, $g, $b;

    $self->ThePair('R', $r );
    $self->ThePair('G', $g );
    $self->ThePair('B', $b );
    my $rgb = $self->FindWindow( $self->ID('RGB_PANEL') );
    $rgb->Refresh; # or Clear ;)
    $rgb->SetBackgroundColour( new Wx::Colour( $r, $g, $b ) );
}

sub OnRGB {
    my( $self, $r, $g, $b ) = @_;
    $r ||= $self->FindWindow( $self->ID('R_SLIDER') )->GetValue;
    $g ||= $self->FindWindow( $self->ID('G_SLIDER') )->GetValue;
    $b ||= $self->FindWindow( $self->ID('B_SLIDER') )->GetValue;
    my $rgb = $self->FindWindow( $self->ID('RGB_PANEL') );
    $rgb->Refresh;
    $rgb->SetBackgroundColour( new Wx::Colour( $r, $g, $b ) );
    $self->FindWindow(
        $self->ID('HEX_TEXT')
    )->SetValue( sprintf '#%02X%02X%02X', $r, $g, $b );
}

sub OnAbout {
    my( $self, $event ) = @_;

  # display a simple about box (i just keep copying and pasting this)
    Wx::MessageBox(
       qq[ ${\__PACKAGE__} $VERSION
           Created by podmaster of perlmonks.org fame

           running on wxPerl $Wx::VERSION
           ${\wxVERSION_STRING()}

           This program is released under the same terms as perl itsel
+f
           (if you don't know what that means, visit http://perl.com )
           
           To learn more about wxPerl visit http://wxperl.sf.net/
        ],
        "About ${\__PACKAGE__} $VERSION", # TITLE
        wxOK | wxICON_INFORMATION,
        $self
    );
}

##### GGGUI GENERATORs

sub BOXS {
    my( $self, $parent, $str, $orient ) = @_;
    return Wx::StaticBoxSizer->new(
            Wx::StaticBox->new(
                    $parent,
                    $self->ID(time.{}.rand), # so I can register OnAbo
+ut
                    $str,
                ,),
            $orient,
       ,);
}

sub ID { ## ALL KEYS ARE UPPERCASED
    my($self, $key, $dontCreate ) = @_;

    return $self->{"\0ID_"} if not defined $key;

    $self->{"\0I"} ||=6660; #  the perpetual ID incrementor

    $key = uc($key);

    if(exists $self->{"\0ID_"}->{$key} ) {
        return $self->{"\0ID_"}->{$key};
    } else {
        return 0 if $dontCreate;
        return $self->{"\0ID_"}->{$key} = ++$self->{"\0I"};
    }
}


sub BoxAndSlider {
    my( $self, $parent, $L ) = @_;

### THIS ONE Don't SHOW, WTF? (the "H BOY" and $BDec )
    my $LSizer = Wx::BoxSizer->new(  wxHORIZONTAL );

    my $LDec = Wx::TextCtrl->new(
        $parent,
        $self->ID($L.'_DEC'),
        "255",
        [-1,-1],
        [30,-1], # 30 seems to do the job, for max 3 chars, but I don'
+t know
                 # how portable this is DAMMIT!!!!!!!
         wxTE_READONLY, # SetEditable(0);#)
    );

    my $LHex = Wx::TextCtrl->new(
        $parent,
        $self->ID($L.'_HEX'),
        "#FF",
        [-1,-1],
        [30,-1], # 30 seems to do the job, for max 3 chars, but I don'
+t know
                 # how portable this is DAMMIT!!!!!!!
         wxTE_READONLY, # SetEditable(0);#)
    );

    my $LLine = new Wx::Panel( #StaticLine(
        $parent,
        $self->ID($L.'_LINE'),
        [-1,-1],
        [250,-1],
#        wxLI_HORIZONTAL,
    );
    $LLine->Refresh();
    $LLine->SetBackgroundColour($parent->GetBackgroundColour);
    $LSizer->Add( $LDec, 0, wxALIGN_LEFT|wxRIGHT, 5 );
    $LSizer->Add( $LLine, 1, wxGROW | wxCENTRE ,5 );
    $LSizer->Add( $LHex, 0, wxALIGN_RIGHT|wxLEFT, 5 );

    $parent->SetSizer( $LSizer );
    $parent->SetAutoLayout( 1 );

    $LSizer->Fit( $parent ); # cause I don't want it fit
    $LSizer->SetSizeHints( $parent );

    return $LSizer;

}

sub GUI {
    my( $self, $parent ) = @_;

    my $RSizer = $self->BOXS($parent, "V Red", wxVERTICAL);
    my $RPanel = Wx::Panel->new(
        $parent,
        $self->ID('R_PANEL'),
        [-1, -1],
        [320, 20],
    );

    $RPanel->SetBackgroundColour( new Wx::Colour(255, 0, 0) ); # red
    $self->BoxAndSlider( $RPanel, 'R' );

    my $RScroll = Wx::Slider->new(
        $parent,
        $self->ID('R_SLIDER'),
        255,
        0,
        255,
        [-1,-1],
        [335, 20],
        wxSL_HORIZONTAL
        | wxSL_AUTOTICKS
## wxSB_HORIZONTAL ## no different thant wxSL_HORIZONTAL
    );

    $RSizer->Add( $RScroll, 0, wxALIGN_CENTRE, 0 );
    $RSizer->Add( $RPanel, 0, wxALIGN_CENTRE, 0 );

    my $GSizer = $self->BOXS($parent, "V Green", wxVERTICAL);
    my $GPanel = Wx::Panel->new(
        $parent,
        $self->ID('G_PANEL'),
        [-1, -1],
        [335, 20],
    );

    $GPanel->SetBackgroundColour( new Wx::Colour(0, 255, 0) ); # green
    $self->BoxAndSlider( $GPanel, 'G' );

    my $GScroll = Wx::Slider->new(
        $parent,
        $self->ID('G_SLIDER'),
        255,
        0,
        255,
        [-1,-1],
        [335, 20],
        wxSL_HORIZONTAL
        | wxSL_AUTOTICKS
    );

    $GSizer->Add( $GScroll, 0, wxALIGN_CENTRE, 0 );
    $GSizer->Add( $GPanel, 0, wxALIGN_CENTRE, 0 );

    my $BSizer = $self->BOXS($parent, "V Blue", wxVERTICAL);
    my $BPanel = Wx::Panel->new(
        $parent,
        $self->ID('B_PANEL'),
        [-1, -1],
        [335, 20],
    );

    $BPanel->SetBackgroundColour( new Wx::Colour(0, 0, 255) ); # blue

    $self->BoxAndSlider( $BPanel, 'B' );

    my $BScroll = Wx::Slider->new(
        $parent,
        $self->ID('B_SLIDER'),
        255,
        0,
        255,
        [-1,-1],
        [335, 20],
        wxSL_HORIZONTAL
        | wxSL_AUTOTICKS
#        | wxSL_LABELS #  not nice imho ;(
    );

    my $Hex2RGB = Wx::Button->new(
        $parent,
        $self->ID('HEX2RGB_BUTTON'),
        "HEX TO RGB",
        wxDefaultPosition,
        wxDefaultSize,
        wxNO_BORDER
    );

    my $HexText = Wx::TextCtrl->new(
        $parent,
        $self->ID('HEX_TEXT'),
        '#FFFFFF',
        [-1,-1],
        [-1,-1],
    );

    my $StaticLine =  new Wx::StaticLine(
            $parent,
            $self->ID('HEX_LINE'),
            [-1,-1],
            [150,22],
            wxLI_HORIZONTAL | wxSIMPLE_BORDER
            | wxCLIP_CHILDREN 
        );    

    $StaticLine->Show('show'); # weird as hell (makes it graaaay)
    my $ButtonSizer = Wx::BoxSizer->new( wxHORIZONTAL );

    $ButtonSizer->Add( $Hex2RGB, 0, wxCENTRE | wxALIGN_LEFT | wxALL, 5
+ );
    $ButtonSizer->Add( $StaticLine, 0, wxCENTRE, 5 );

    $ButtonSizer->Add( $HexText, 0, wxCENTRE | wxALIGN_RIGHT| wxALL, 5
+ );

    $BSizer->Add( $BScroll, 0, wxALIGN_CENTRE, 0);
    $BSizer->Add( $BPanel,  1, wxALIGN_CENTRE, 0 ); # CHAOS

    my $RGBSizer = Wx::BoxSizer->new( wxVERTICAL );

    $RGBSizer->Add( $RSizer, 1, wxGROW | wxALIGN_CENTRE, 5 );
    $RGBSizer->Add( $GSizer, 1, wxGROW | wxALIGN_CENTRE, 5 );
    $RGBSizer->Add( $BSizer, 1, wxGROW | wxALIGN_CENTRE, 5 );
    $RGBSizer->Add( $ButtonSizer, 0,  wxALIGN_CENTRE, 5 );

    my $RGBPanel = Wx::Panel->new(
        $parent,
        $self->ID('RGB_PANEL'),
        [-1, -1],
        [100, -1],
    );
    $RGBPanel->SetBackgroundColour( new Wx::Colour(255, 255, 255) ); #
+ white
    my $RGBPanelSizer = $self->BOXS($parent, "H RGB", wxHORIZONTAL);
    $RGBPanelSizer->Add( $RGBPanel, 1, wxGROW | wxALIGN_CENTRE, 5 );

    my $RootSizer = Wx::BoxSizer->new( wxHORIZONTAL );
    $RootSizer->Add( $RGBSizer, 1, wxGROW | wxALIGN_CENTRE, 5 );
#    $RootSizer->Add( $RGBPanel, 0, wxGROW, 5 );
    $RootSizer->Add( $RGBPanelSizer, 0, wxGROW | wxALIGN_CENTRE, 5 );


    $parent->SetAutoLayout( 1 );
    $parent->SetSizer( $RootSizer );

    $RootSizer->Fit( $parent ); # cause I don't want it fit
    $RootSizer->SetSizeHints( $parent );

    return $RootSizer;
}


package Wx::HexOrRgb::App;

use strict;
use Wx;
use base qw(Wx::App);

sub OnInit {
    my( $self ) = @_;

    my( $frame ) = new Wx::HexOrRgb();
    $frame->Show(1);
    $frame->Refresh();
    1;
}

package main;

# if this file is invoked directly (not use'd), run the app
unless( caller() ) {
    Wx::HexOrRgb::App->new()->MainLoop();
}

__END__

=head1 AUTHOR

podmaster - http://perlmonks.org/index.pl?node=podmaster

=head1 LICENSE

Copyright
D.H ( podmaster )
http://crazyinsomniac.perlmonk.org
2002, All rights reserved.

This program is released under the same terms as perl itself
(if you don't know what that means, visit http://perl.com )

=cut





# http://perlmonks.org/index.pl?node_id=155288;#The Dynamic Duo --or--
+ Holy Getopt::Long, Pod::UsageMan!
[download]

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