alertdialog.java

基于SUN的javacomm20-win32 API中的例子SerialDemo改进

package org.rien.rs;

import java.awt.*;
import java.awt.event.*;

public class AlertDialog extends Dialog implements ActionListener {

	public AlertDialog(Frame parent, String title, String lineOne,
			String lineTwo, String lineThree) {
		super(parent, title, true);

		Panel labelPanel = new Panel();
		labelPanel.setLayout(new GridLayout(3, 1));
		labelPanel.add(new Label(lineOne, Label.CENTER));
		labelPanel.add(new Label(lineTwo, Label.CENTER));
		labelPanel.add(new Label(lineThree, Label.CENTER));
		add(labelPanel, "Center");

		Panel buttonPanel = new Panel();
		Button okButton = new Button("确认");
		okButton.addActionListener(this);
		buttonPanel.add(okButton);
		add(buttonPanel, "South");

		FontMetrics fm = getFontMetrics(getFont());
		int width = Math.max(fm.stringWidth(lineOne), Math.max(fm
				.stringWidth(lineTwo), fm.stringWidth(lineThree)));

		setSize(width + 40, 150);
		setLocation(parent.getLocationOnScreen().x + 30, parent
				.getLocationOnScreen().y + 30);
		setVisible(true);
	}

	public void actionPerformed(ActionEvent e) {
		setVisible(false);
		dispose();
	}
}