import?java.awt.*;

import?javax.swing.*;


public?class?RoundButton?extends?JButton?{

????public?RoundButton（String?label）?{
????????super（label）;??//調用父類構造函數
????????setContentAreaFilled（false）;???//不自行繪制按鈕背景
????}


????//繪制圓和標簽
????protected?void?paintComponent（Graphics?g）?{
???????if?（getModel（）.isArmed（））?{??//鼠標點擊時
????????????g.setColor（Color.lightGray）;??//顏色為灰色
????????}?else?{
????????????g.setColor（getBackground（））;??//置按鈕顏色
????????}
????????g.fillOval（0?0?getSize（）.width?getSize（）.height）;??//繪制圓
????????super.paintComponent（g）;??//調用父類函數繪制其余部分
????}


????//繪制邊框
???protected?void?paintBorder（Graphics?g）?{
???????g.setColor（getForeground（））;??//設置邊框顏色
???????g.drawOval（0?0?getSize（）.width-1?getSize（）.height-1）;??//在邊界上繪制一個橢圓
???}

}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件??????175554??2004-07-21?18:59??11-1.bmp
?????文件?????????998??2003-05-05?02:31??RoundButton.class
?????文件?????????872??2003-04-30?18:02??RoundButton.java
?????文件?????????952??2003-05-05?02:32??RoundButtonDemo$1.class
?????文件????????2090??2003-05-05?02:32??RoundButtonDemo.class
?????文件????????1524??2004-03-29?18:10??RoundButtonDemo.java