In regards to my earlier node I've done a little more research and it seems XRC is the way to go. Using WxGlade I've come up with my example I was talking about earlier: 

use Wx;
use Wx::XRC;

package MyPanel;
use base 'Wx::Panel';

sub new {
    my $class = shift;
    my $self = $class->SUPER::new();
    $self->OnInit(@_);
    return $self;
}

sub OnInit {
    my $self = shift;
    my $parent = shift;
    my $xrc = shift;

    $xrc->LoadPanel($parent, 'panel_1');
    return $self;
}

#################################################
#
#
package MyApp;
#
#
#################################################
use strict;
use vars qw(@ISA);
@ISA = qw(Wx::App);

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

    my($frame) = MyFrame->new( undef, -1, "Test");

    $frame->SetSize(Wx::Size->new(640, 480));

    $frame->CenterOnScreen;

    $frame->Show(1);
    $frame->SetIcon( Wx::GetWxPerlIcon() );

    $this->SetTopWindow($frame);

    return 1;
}

#################################################
#
#
package MyFrame;
#
#
#################################################
use strict;
use vars qw(@ISA);

use Wx::Html;

@ISA = qw(Wx::Frame);

use Wx qw(:everything);
use Wx::Event qw(:everything);

sub new {

    my( $class ) = shift;
    my( $this ) = $class->SUPER::new( @_ );

    # Splitter
    $this->{main_splitter} = Wx::SplitterWindow->new($this, -1, wxDefa
+ultPosition, wxDefaultSize, wxSP_NOBORDER  );

    # Minimum size for the framework of the html list box 
    $this->{main_splitter}->SetMinimumPaneSize(175);

    $this->{listbox_pane} = Wx::Panel->new($this->{main_splitter}, -1,
+ wxDefaultPosition, wxDefaultSize, );
    $this->{html_list} = Wx::SimpleHtmlListBox->new($this->{listbox_pa
+ne}, -1, wxDefaultPosition, wxDefaultSize, [], wxSIMPLE_BORDER );
    $this->{html_list}->SetBackgroundColour(Wx::Colour->new(255,255,25
+5));
    $this->{html_list}->Append( 'Notebook_1' );
    $this->{html_list}->Append( 'Notebook_2' );

    EVT_LISTBOX( $this, $this->{html_list}, \&OnModuleClick );

    $this->{notebook_pane} = Wx::Panel->new($this->{main_splitter}, -1
+, wxDefaultPosition, wxDefaultSize, );

    $this->__do_layout();

    return $this;
}

sub __do_layout {

    my $self = shift;

    $self->{main_sizer} = Wx::BoxSizer->new(wxHORIZONTAL);
    $self->{notebook_sizer} = Wx::GridSizer->new(1, 1, 0, 0);

    $self->{listbox_sizer}= Wx::FlexGridSizer->new(1, 1, 10, 10);
    $self->{listbox_sizer}->Add($self->{html_list}, 0, wxEXPAND, 0);
    $self->{listbox_pane}->SetSizer($self->{listbox_sizer});
    $self->{listbox_sizer}->AddGrowableRow(0);
    $self->{listbox_sizer}->AddGrowableCol(0);

    $self->{notebook_pane}->SetSizer($self->{notebook_sizer});
    $self->{main_splitter}->SplitVertically($self->{listbox_pane}, $se
+lf->{notebook_pane}, 200 );
    $self->{main_sizer}->Add($self->{main_splitter}, 1, wxEXPAND, 0);
    $self->SetSizer($self->{main_sizer});
    $self->{main_sizer}->Fit($self);
    $self->Layout();
}

sub OnModuleClick {

    my( $self, $event ) = @_;

    my $cursor=Wx::BusyCursor->new();

    if ( $self->{html_list}->GetString( $event->GetInt ) eq 'Notebook_
+1') {   
        
    $self->{xrc} = Wx::XmlResource->new();
    $self->{xrc}->InitAllHandlers();
    $self->{xrc}->Load('notebook1.xrc');

    $self->{panel} = MyPanel->new($self->{notebook_pane}, $self->{xrc}
+);
    }
    else {
    $self->{xrc} = Wx::XmlResource->new();
    $self->{xrc}->InitAllHandlers();
    $self->{xrc}->Load('notebook2.xrc');

    $self->{panel} = MyPanel->new($self->{notebook_pane}, $self->{xrc}
+);

    }
    
    undef $cursor;
}


package main;

my($app) = MyApp->new();
$app->MainLoop();

[download]

the two xrc files mentioned: 

# notebook1.xrc
<?xml version="1.0" encoding="UTF-8"?>
<!-- generated by wxGlade 0.4.1 on Wed Nov  1 13:21:42 2006 -->

<resource version="2.3.0.1">
    <object class="wxPanel" name="panel_1">
        <style>wxTAB_TRAVERSAL|wxFULL_REPAINT_ON_RESIZE</style>
         <object class="wxBoxSizer">
            <orient>wxVERTICAL</orient>
            <object class="sizeritem">
                <option>1</option>
                <flag>wxEXPAND</flag>
                <object class="wxNotebook" name="notebook_1">
                    <usenotebooksizer>1</usenotebooksizer>
                    <object class="notebookpage">
                    <label>Notebook 1</label>
                    <object class="wxPanel" name="notebook_1_pane_1">
                        <style>wxTAB_TRAVERSAL</style>
                        <object class="wxFlexGridSizer">
                            <hgap>0</hgap>
                            <growablerows>0</growablerows>
                            <rows>2</rows>
                            <growablecols>0</growablecols>
                            <cols>1</cols>
                            <vgap>0</vgap>
                            <object class="sizeritem">
                                <option>1</option>
                                <flag>wxEXPAND</flag>
                                <object class="wxStaticBoxSizer">
                                    <orient>wxHORIZONTAL</orient>
                                    <label>Notebook 1 Box</label>
                                </object>
                            </object>
                            <object class="sizeritem">
                                <option>1</option>
                                <flag>wxEXPAND</flag>
                                <object class="wxFlexGridSizer">
                                    <hgap>0</hgap>
                                    <rows>1</rows>
                                    <growablecols>0,2</growablecols>
                                    <cols>3</cols>
                                    <vgap>0</vgap>
                                    <object class="sizeritem">
                                        <flag>wxALIGN_RIGHT</flag>
                                        <object class="wxButton" name=
+"button_1">
                                            <label>button_1</label>
                                        </object>
                                    </object>
                                    <object class="spacer">
                                        <size>75, 20</size>
                                    </object>
                                    <object class="sizeritem">
                                        <object class="wxButton" name=
+"button_2">
                                            <label>button_2</label>
                                        </object>
                                    </object>
                                </object>
                            </object>
                        </object>
                    </object>
                    </object>
                </object>
            </object>
        </object>
    </object>
</resource>


# notebook2.xrc
<?xml version="1.0" encoding="UTF-8"?>
<!-- generated by wxGlade 0.4.1 on Wed Nov  1 13:21:42 2006 -->

<resource version="2.3.0.1">
    <object class="wxPanel" name="panel_1">
        <style>wxTAB_TRAVERSAL|wxFULL_REPAINT_ON_RESIZE</style>
         <object class="wxBoxSizer">
            <orient>wxVERTICAL</orient>
            <object class="sizeritem">
                <option>1</option>
                <flag>wxEXPAND</flag>
                <object class="wxNotebook" name="notebook_1">
                    <usenotebooksizer>1</usenotebooksizer>
                    <object class="notebookpage">
                    <label>Notebook 2</label>
                    <object class="wxPanel" name="notebook_1_pane_1">
                        <style>wxTAB_TRAVERSAL</style>
                        <object class="wxFlexGridSizer">
                            <hgap>0</hgap>
                            <growablerows>0</growablerows>
                            <rows>2</rows>
                            <growablecols>0</growablecols>
                            <cols>1</cols>
                            <vgap>0</vgap>
                            <object class="sizeritem">
                                <option>1</option>
                                <flag>wxEXPAND</flag>
                                <object class="wxStaticBoxSizer">
                                    <orient>wxHORIZONTAL</orient>
                                    <label>Notebook 2</label>
                                </object>
                            </object>
                            <object class="sizeritem">
                                <option>1</option>
                                <flag>wxEXPAND</flag>
                                <object class="wxFlexGridSizer">
                                    <hgap>0</hgap>
                                    <rows>1</rows>
                                    <growablecols>0,2</growablecols>
                                    <cols>3</cols>
                                    <vgap>0</vgap>
                                    <object class="sizeritem">
                                        <flag>wxALIGN_RIGHT</flag>
                                        <object class="wxButton" name=
+"button_1">
                                            <label>button_3</label>
                                        </object>
                                    </object>
                                    <object class="spacer">
                                        <size>75, 20</size>
                                    </object>
                                    <object class="sizeritem">
                                        <object class="wxButton" name=
+"button_2">
                                            <label>button_4</label>
                                        </object>
                                    </object>
                                </object>
                            </object>
                        </object>
                    </object>
                    </object>
                </object>
            </object>
        </object>
    </object>
</resource>

[download]

All seems well except I can't seem to figure out why my notebook widget generated via the XRC files arne't expanding to the full size of the panel located on the right side of the splitter window.

Can anyone tell me what I'm missing?

Thanks

In reply to WxPerl and XRC ? by Anonymous Monk

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