Your variable naming is quite strange. $self should be the object whose method you are writing, not some parameter. That is within the App package it's the application, within App::Widget it's the widget and within App::Widget::Menu it's the menu. And you, generally, should not access the insides of the App from within an App::Widget::Menu method.

If I understand things right, you pass an app to widget constructor and both app and widget to menu. so the code should be 

package App;

sub new {
    my ($class, %args) = @_;

    my $self = bless { %args }, $class;

    $self->{widget}    = App::Widget->new( $self );

    return $self;
}

package App::Widget;
    my( $class, $app ) = @_;

    my $self = bless {  }, $class;

    $app->{menu} = App::Widget::Menu->new( $app, $self);

    return $self;
}

package App::Widget::Menu;

sub new {
    my( $class, $app, $widget ) = @_;

    my $self = bless {  }, $class;

    $app->{some_arg} = 1;
    $app->{menu}->BackgroundColor(222,222,222);
    
    return $self;
}

[download]

Jenda
Enoch was right!
Enjoy the last years of Rome.

In reply to Re: Advice please on variable naming style in modules by Jenda
in thread Advice please on variable naming style in modules by isync

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