我試圖使用下面顯示的代碼使用Java構建記事本的字體窗口。但是,我在設置列表框內指定的文本大小時遇到問題。Java中的列表框
我試圖得到相應的大小對應於所選項目的索引,但找不到任何此類方法。
f = new Frame("Font");
f.setLayout(new GridLayout(3, 3));
b1 = new Button("OK");
l1 = new Label("Font :");
l2 = new Label("Size :");
l3 = new Label("Font Style :");
lb1 = new List(10, false);
lb2 = new List(10, false);
lb3 = new List(5, false);
String [] s = {"Times New Roman", "Arial", "Verdana", "Trebuchet MS", "Papyrus","Monotype Corsiva","Microsoft Sans Serif", "Courier", "Courier New"};
for(int i = 0; i < s.length; i++)
{
lb1.add(s[i]);
}
for(int i = 8; i <=72; i += 2)
{
lb2.add(i + "");
}
String [] s1 = {"BOLD", "ITALIC", "PLAIN"};
for(int i = 0; i < s1.length; i++)
{
lb3.add(s1[i]);
}
f.add(l1);
f.add(l2);
f.add(l3);
f.add(lb1);
f.add(lb2);
f.add(lb3);
f.add(b1);
b1.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae)
{
if(lb3.isIndexSelected(0))
fo = new Font(lb1.getSelectedItem(), Font.BOLD, **lb2.getSelectedIndex**());
else if(lb3.isIndexSelected(1))
fo = new Font(lb1.getSelectedItem(), Font.ITALIC, lb2.getSelectedIndex());
else
fo = new Font(lb1.getSelectedItem(), Font.PLAIN, lb2.getSelectedIndex());
ta1.setFont(fo);
MyFrame15.f.dispose();
}
});
f.setSize(300, 300);
Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
int x = (int)((d.getWidth()/2) - 200);
int y = (int)((d.getHeight()/2) - 200);
f.setLocation(x, y);
f.setVisible(true);
}
請有人回答我的問題儘快... –
什麼傢伙plzzzz有人回答我的問題。 –