小弟初学者,
static class ml implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
MenuItem target=(MenuItem)e.getSource();
String ac=target.getActionCommand();
if(ac.equals("粗体"))
{
frm.T1.setFont(new Font(ac,Font.BOLD,10));
frm.T1.setText(frm.T1.getText());
}
}
}
这样好像不行~!
static class ml implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
MenuItem target=(MenuItem)e.getSource();
String ac=target.getActionCommand();
if(ac.equals("粗体"))
{
frm.T1.setFont(new Font(ac,Font.BOLD,10));
frm.T1.setText(frm.T1.getText());
}
}
}
这样好像不行~!
你的ac="粗体" 又不是字体,把参数ac改成"宋体"看看
import java.awt.*;
import java.awt.event.*;class Frame1 extends Frame
{
MenuBar mb1=new MenuBar();
Menu fi=new Menu("File");
MenuItem file[]={
new MenuItem("Open",new MenuShortcut(KeyEvent.VK_0)),
new MenuItem("Save",new MenuShortcut(KeyEvent.VK_S)),
new MenuItem("Exit",new MenuShortcut(KeyEvent.VK_E))
};
Menu fi2=new Menu("Edit");
MenuItem file2[]={
new MenuItem("Copy"),
new MenuItem("Cut"),
new MenuItem("Paste"),
new MenuItem("DeleteAll")
};
Menu fi3=new Menu("Option");
Menu file3[]={
new Menu("字体"),
new Menu("字号"),
};
CheckboxMenuItem vie1[]={
new CheckboxMenuItem("粗体"),
new CheckboxMenuItem("斜体")
};
CheckboxMenuItem vie2[]={
new CheckboxMenuItem("宋体"),
new CheckboxMenuItem("黑体")
};
CheckboxMenuItem vie3[]={
new CheckboxMenuItem("10"),
new CheckboxMenuItem("11")
};
TextArea T1=new TextArea();
public Frame1(String s)
{
super(s);
this.setSize(new Dimension(400,300));
this.setMenuBar(mb1);
mb1.add(fi);
for(int i=0;i<file.length;i++)
{
fi.add(file[i]);
}
mb1.add(fi2);
for(int i=0;i<file2.length;i++)
{
fi2.add(file2[i]);
}
mb1.add(fi3);
for(int i=0;i<file3.length;i++)
{
fi3.add(file3[i]);
}
for(int i=0;i<vie1.length;i++)
{
fi3.add(vie1[i]);
}
for(int i=0;i<vie2.length;i++)
{
file3[0].add(vie2[i]);
}
for(int i=0;i<vie3.length;i++)
{
file3[1].add(vie3[i]);
}
add(T1);
}
}
public class eg_4
{ static Frame1 frm=new Frame1("一个简单的编辑程序");
static WinLis wlis=new WinLis();
public static void main(String args[])
{ frm.addWindowListener(wlis);
frm.setVisible(true);
frm.file[2].addActionListener(new acl());
}
static class acl implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
Object source=e.getSource();
if(source==frm.file[2]) frm.dispose();
}
} static class WinLis extends WindowAdapter
{
public void windowClosing(WindowEvent e) // 按下窗口关闭钮
{
frm.dispose(); // 关闭窗口并释放资源
}
public void windowDeactivated(WindowEvent e) // 变成非作用中窗口
{
}
public void windowActivated(WindowEvent e) // 变成作用中窗口
{
}
public void windowDeiconified(WindowEvent e) // 窗口还原
{
}
public void windowIconified(WindowEvent e) // 窗口最小化
{
}
public void windowOpened(WindowEvent e) // 打开窗口
{
}
}
}