m_KnowledgeFlowFrame.getContentPane().setLayout(new BorderLayout());
m_KnowledgeFlowFrame.getContentPane()
.add(kna, BorderLayout.CENTER);
m_KnowledgeFlowFrame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent w) {
kna.closeAllTabs();
kna.clearLayout(); // add a single "Untitled" tab ready for next time
m_KnowledgeFlowFrame.dispose();
m_KnowledgeFlowFrame = null;
m_KnowledgeFlowBut.setEnabled(true);
checkExit();