SWT的自定义Dialog

package test01;

import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

public class TestDialog {
	Display display = new Display();
	Shell shell;
	static Button btn;

	public static void main(String[] args) {
		Display display = new Display();
		Shell shell = new Shell(display);
		shell.setText("shell");
		shell.setBounds(100, 100, 500, 500);
		shell.open();

		final MyDialog dialog = new MyDialog(shell);
		Button bt = new Button(shell, SWT.None);
		bt.setBounds(200, 50, 100, 50);
		bt.addSelectionListener(new SelectionAdapter() {

			@Override
			public void widgetSelected(SelectionEvent e) {
				dialog.open();
				// btn = dialog.getButton(IDialogConstants.OK_ID);
				// btn.setEnabled(false);//让按钮失效
			}

		});

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

		}
		display.dispose();
	}

	private static final class MyDialog extends Dialog {

		protected MyDialog(Shell shell) {
			super(shell);
		}

		@Override
		protected Control createDialogArea(Composite parent) {
			Composite comp = new Composite(parent, SWT.None);
			comp.setLayout(new GridLayout());
			new Label(comp, SWT.None).setText("fdsg");
			;
			new Text(comp, SWT.None);
			return super.createDialogArea(parent);
		}

		@Override
		protected Button createButton(Composite parent, int id, String label,
				boolean defaultButton) {
			// return super.createButton(parent, id, label, defaultButton);
			return null;// 重写父类的按钮，返回null，使默认按钮失效
		}

		/**
		 * 改写默认的OK、cancel按钮
		 */
		@Override
		protected void initializeBounds() {
			Composite compo = (Composite) getButtonBar();
			super.createButton(compo, IDialogConstants.OK_ID, "OK", false);
			super.createButton(compo, IDialogConstants.NO_ID, "NO", false);
			super.initializeBounds();
		}

		@Override
		protected Point getInitialSize() {
			return new Point(300, 200);// 重新设置大小
		}

		@Override
		protected Button getButton(int id) {
			// TODO 自动生成的方法存根
			return super.getButton(id);
		}

	}
}