I'm trying to figure out why my ActiveX::IE browser won't default to the size of my notebook tab. I can set the size but unfortunately it won't resize if I change the size of my test app. I've posted my test code below:

package MyApp;

use strict;
use utf8;

use base qw( Wx::App );

use Wx ':everything';
use Wx::Event ':everything';

sub OnInit {

    my($this) = @_;

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

    $frame->CenterOnScreen;

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

    $this->SetTopWindow( $frame );

    return 1;
}

package MyFrame;

use Wx qw[:everything];
use Wx::Event qw[:everything];

use Wx::ActiveX::IE qw[:iexplorer];

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

sub new {

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

    $self->{notebook_1} = Wx::Notebook->new($self, -1, wxDefaultPositi
+on, wxDefaultSize, 0);
    $self->{notebook_1_pane_1} = Wx::Panel->new($self->{notebook_1}, -
+1, wxDefaultPosition, [500, 300], );
    $self->{notebook_1_pane_2} = Wx::Panel->new($self->{notebook_1}, -
+1, wxDefaultPosition, wxDefaultSize, );

    $self->{sizer_1} = Wx::BoxSizer->new(wxVERTICAL);
    $self->{notebook_1}->AddPage($self->{notebook_1_pane_1}, "Tab1");
    $self->{notebook_1}->AddPage($self->{notebook_1_pane_2}, "Tab2");
    $self->{sizer_1}->Add($self->{notebook_1}, 1, wxEXPAND, 0);
    $self->SetSizer($self->{sizer_1});
    $self->{sizer_1}->Fit($self);
    $self->Layout();

    my $browser = Wx::ActiveX::IE->new( $self->{notebook_1_pane_1} , -
+1 , wxDefaultPosition , wxDefaultSize );
    #my $browser = Wx::ActiveX::IE->new( $self->{notebook_1_pane_1} , 
+-1 , wxDefaultPosition , [500, 300] );
    
    $browser->LoadUrl("http://www.google.com");

    return $self;

}

1;

package main;

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

Does anyone see what I'm missing?