如何在SWT中监听启用或禁用按钮？

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class ButtonListenerExample {
    public static void main(String[] args) {
        Display display = new Display();
        Shell shell = new Shell(display);
        shell.setLayout(new FillLayout());

        Button button = new Button(shell, SWT.CHECK);
        button.setText("启用/禁用按钮");

        button.addSelectionListener(new SelectionListener() {
            @Override
            public void widgetSelected(SelectionEvent e) {
                Button selectedButton = (Button) e.widget;
                if (selectedButton.getSelection()) {
                    // 启用按钮的操作
                    System.out.println("按钮已启用");
                } else {
                    // 禁用按钮的操作
                    System.out.println("按钮已禁用");
                }
            }

            @Override
            public void widgetDefaultSelected(SelectionEvent e) {
                // do nothing
            }
        });

        shell.pack();
        shell.open();

        while (!shell.isDisposed()) {
            if (!display.readAndDispatch()) {
                display.sleep();
            }
        }

        display.dispose();
    }
}