@Override
	protected void createButtons() {
		super.createButtons();

		iconButton.setContentAreaFilled( false );
		maxButton.setContentAreaFilled( false );
		closeButton.setContentAreaFilled( false );

		Border emptyBorder = BorderFactory.createEmptyBorder();
		iconButton.setBorder( emptyBorder );
		maxButton.setBorder( emptyBorder );
		closeButton.setBorder( emptyBorder );

		updateButtonsVisibility();
	}
Provides the Flat LaF internal frame title bar.

@author Karl Tauber
flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatInternalFrameTitlePane.java