菜单对话框和绘图图标
墨初 知识笔记 35阅读
这是一个男人的故事。当关闭，您可以在对话框中使用一个符号，就像林肯使用弹出对话框一样。2导入Java .advanced waste treatment of water 高次废水处理的。事件。*;3 classconfirmdialogextendsdialogimplementsactionlistener 4 { 5 privatestopsignstop=newStopSign()；六anprivateButtonokay=new button(' OK ')；7 privatebuttoncancel=new button(' cancel ')；8 private label label=new label(' are yousure？标签。中心);9publicbooleanisOkay=false10
r: rgba(0, 0, 0, 1)"> private class WindowCloser extends WindowAdapter11 {
12 public void windowClosing(WindowEvent we)
13 {
14 ConfirmDialog.this.isOkay=false;
15 ConfirmDialog.this.hide();
16 }
17 }
18 public ConfirmDialog(Frame parent)
19 {
20 this(parent,"Please confirm","Are you sure?");
21 }
22 public ConfirmDialog(Frame parent, String title, String question)
23 {
24 super(parent,title, true);
25 label.setText(question);
26 setup();
27 okay.addActionListener(this);
28 cancel.addActionListener(this);
29 addWindowListener(new WindowCloser());
30 setResizable(false);//不能改变对话框的大小
31 pack();
32 show();
33 }
34 private void setup()
35 {
36 Panel buttons=new Panel();
37 buttons.setLayout(new FlowLayout());
38 buttons.add(okay);
39 buttons.add(cancel);
40 setLayout(new BorderLayout());
41 add("Center",label);
42 add("South",buttons);
43 add("West",stop);
44 }
45 public void actionPerformed(ActionEvent ae)
46 {
47 isOkay=(ae.getSource()==okay);
48 hide();
49 }
50}
51class StopSign extends Canvas
52{
53 public StopSign()
54 {
55 super();
56 setBackground(Color.cyan);
57 }
58 public Dimension getPreferredSize() //覆盖该方法
59 {
60 return new Dimension(120,140);
61 }
62 public void paint(Graphics g)
63 {
64 final int MID=60;
65 final int TOP=20;
66
67 g.setColor(Color.blue);
68 g.fillRect(0,175,300,50);//背景;填充指定的矩形
69
70 g.setColor(Color.yellow);
71 g.fillOval(-20,-20,40,40); //太阳;用当前颜色填充由指定矩形限定的椭圆
72
73 g.setColor(Color.white);
74 g.fillOval(MID-20,TOP,40,40); //头
75 g.fillOval(MID-35,TOP+35,70,50);//上躯干
76 g.fillOval(MID-50,TOP+80,100,60);//下躯干
77
78 g.setColor(Color.black);
79 g.fillOval(MID-10,TOP+10,5,5); //左眼
80 g.fillOval(MID+5,TOP+10,5,5); //右眼
81
82 g.drawArc(MID-10, TOP+20, 20, 10, 190, 160);//笑容
83
84 g.drawLine(MID-25,TOP+60, MID-50, TOP+30); //左手臂
85 g.drawLine(MID+25,TOP+60, MID+55, TOP+30); //右手臂
86
87 g.drawLine(MID-20, TOP+5, MID+20, TOP+5); //帽子的边沿
88 g.fillRect(MID-15,TOP-20,30,25);//帽顶
89 }
90}
91public class MenuTest extends Frame implements ActionListener
92{
93 private MenuItem =new MenuItem("New");
94 private MenuItem =new MenuItem("Open");
95 private MenuItem =new MenuItem("Exit");
96 private MenuItem editCut=new MenuItem("Cut");
97 private MenuItem editCopy=new MenuItem("Copy");
98 private MenuItem editPaste=new MenuItem("Paste");
99 public MenuTest()
100 {
101 super("Menu Test Program");
102 Menu >=new Menu(">");
103 (); (false);
104 (); (false);
105 (); //在指定位置分隔一行
106 (); (true);
107 Menu edit=new Menu("Edit");
108 edit.add(editCut); editCut.setEnabled(false);
109 edit.add(editCopy); editCopy.setEnabled(false);
110 edit.add(editPaste);editPaste.setEnabled(false);
111 MenuBar bar=new MenuBar();
112 bar.add(file);
113 bar.add(edit);
114 setMenuBar(bar);
115 (this);
116 setSize(100,100);
117 show();
118 }
119 public void actionPerformed(ActionEvent e)
120 {
121 if(e.getSource()==)
122 {
123 ConfirmDialog exit=new ConfirmDialog(this,"Confirm Exit","Do you really want to exit?");
124 if(exit.isOkay)
125 System.exit(0);
126 }
127 }
128 public static void main(String[] args)
129 {
130 MenuTest f=new MenuTest();
131 }
132}
133
标签：