like so ... But it does not seem to have any effect. Any pointers? Thanks like always.

Well :) :D ;D if your code was runnable, you'd see that it does work, How do I post a question effectively?

Proof of concept

#!/usr/bin/perl --
use Wx;

# First, define an application object class to encapsulate the applica
+tion itself
package HelloWorld;
use base 'Wx::App';

# We must override OnInit to build the window
sub OnInit
{
    my $self = shift;

    my $frame = Wx::Frame->new(undef,           # no parent window
                               -1,              # no window id
                               'Hello, World!', # Window title
                               [-1, -1],        # Position
                               [-1, -1],        # Size
                              );

    my $panel = Wx::Panel->new($frame);


    $frame->CreateStatusBar( 2, Wx::wxSB_RAISED() );
    $frame->GetStatusBar->SetStatusText("--------------humpty",0);
    $frame->GetStatusBar->SetStatusText("dumpty",1);
    $frame->GetStatusBar()->SetForegroundColour(Wx::wxRED());;
    my $warning = Wx::StaticText->new ($frame->GetStatusBar(), -1,"Inp
+ut Error!");
    Wx::Event::EVT_BUTTON(
        $frame,
        Wx::Button->new($panel, -1, "DOIT"),
        sub {
            if( $warning ){
                print "$_\n" for $frame->GetStatusBar()->GetChildren; 
+# only child is warning
                $warning->Destroy();
                undef $warning;
            } 
            $frame->GetStatusBar->SetStatusText("OK ". time ,0);
        },
    );

    $frame->Show(1);
    return 1;
}
# Create the application object, and pass control to it.
package main;
my $app = HelloWorld->new;
$app->MainLoop;
__END__
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