import java.awt.Cursor; import java.awt.FlowLayout; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.io.IOException; import javax.swing.JFrame; import javax.swing.JLabel; /** * 超連結按鈕。 * * @author Elvis */ public class LinkButton extends JLabel { private static final long serialVersionUID = 1L; private String text; private Cursor handCursor = new Cursor(Cursor.HAND_CURSOR); //建立一個游標為手指類型的滑鼠 public LinkButton() { addMouseListener(new MouseAdapter() { public void mouseClicked(MouseEvent e) { Runtime rt = Runtime.getRuntime(); try { String cmd = "rundll32 url.dll,FileProtocolHandler http://ice.kane.blog.163.com"; rt.exec(cmd); } catch (IOException e1) { e1.printStackTrace(); } setClickedText(); } //滑鼠移入標籤時,設定文本樣式事件 public void mouseEntered(MouseEvent e) { setHandCursor(); setMoveInText(); } //滑鼠移出標籤時,設定文本樣式事件 public void mouseExited(MouseEvent e) { setDefaultCursor(); setMoveOutText(); } }); } //設定初始樣式 public void setText(String text) { String content = "<html><font color=blue>" + text + "</font></html>"; this.text = text; super.setText(content); } //設定按一下滑鼠樣式 private void setClickedText() { String content = "<html><font color=green><u>" + text + "</u></font></html>"; super.setText(content); } //設定滑鼠移入樣式 private void setMoveInText(){ String content="<html><font color=red><u>"+text+"</u></font></html>"; super.setText(content); } //設定滑鼠移出樣式 private void setMoveOutText(){ String content="<html><font color=blue>"+text+"</font></html>"; super.setText(content); } //設定游標為手指 private void setHandCursor() { this.setCursor(handCursor); } //設定游標為預設 private void setDefaultCursor() { this.setCursor(null); } public static void main(String[] args) { JFrame f = new JFrame(); f.setSize(400, 400); f.setLayout(new FlowLayout()); LinkButton btn = new LinkButton(); btn.setText("註冊帳號"); f.add(btn); f.setVisible(true); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } }
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