# Create the Display(bmp & sbm) and Drawing(image) Objects
    #    Uses GD calls to draw the screen background and waveform on the image object
    $self->{bmp} = Wx::Bitmap->new("rawaudio.png", wxBITMAP_TYPE_PNG);
    $self->{sbm} = Wx::StaticBitmap->new($self, wxID_ANY, $self->{bmp}, wxDefaultPosition, [600,600]);
    $oscope->{image} = GD::Image->new($oscope->{maxw}, $oscope->{maxh}) || die;

    # Read the updated image and refresh the display
    $self->{bmp} = Wx::Bitmap->new("rawaudio.png", wxBITMAP_TYPE_PNG);	# Reload the screen image
    $self->{sbm}->SetBitmap($self->{bmp});				# Refresh screen

    # Save the Drawing Object to a disk file
    my $png_data = $oscope->{image}->png;				# Write image to a file
    open OUTFILE, ">", "rawaudio.png" || die;
    binmode OUTFILE;
    print OUTFILE $png_data;
    close OUTFILE;