Java开发网 - [求助]右键弹出式菜单奇怪问题

Topic: [求助]右键弹出式菜单奇怪问题

1.[求助]右键弹出式菜单奇怪问题	Copy to clipboard
Posted by: Donnyzhao Posted on: 2004-10-07 18:56 可以显示自定义弹出式菜单,但会与系统自已的菜单交替显示.Why?

2.Re:[求助]右键弹出式菜单奇怪问题 [Re: Donnyzhao]

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Posted by: Donnyzhao
Posted on: 2004-10-07 19:00

import java.awt.*;
import java.awt.event.*;

public class MyApplet
{
  public static void main(String args[])
  {
    MyFrame frm=new MyFrame();
    frm.setVisible(true);
  }
}
class MyFrame extends Frame implements ActionListener
{
  //-------------Menu-------------
  MenuBar MyBar=new MenuBar();
  Menu mn_File,mn_Edit,mn_Option,mn_View,mn_Help;
  //File
  MenuItem mn_File_New,mn_File_Open,mn_File_Save,mn_File_SaveAs;
  MenuItem mn_File_PageOption,mn_File_Print;
  MenuItem mn_File_Exit;
  //Edit
  MenuItem mn_Edit_Undo;
  MenuItem mn_Edit_Cut,mn_Edit_Copy,mn_Edit_Paste,mn_Edit_Delete;
  MenuItem mn_Edit_Find,mn_Edit_FindNext,mn_Edit_Change,mn_Edit_Goto;
  MenuItem mn_Edit_SelectAll,mn_Edit_DateTime;
  //Option
  CheckboxMenuItem mn_Option_Warp;
  MenuItem mn_Option_Font;
  //View
  MenuItem mn_View_StatusBar;
  //Help
  MenuItem mn_Help_Help,mn_Help_About;

  //-----------Popup---------------
  PopupMenu MyPop=new PopupMenu();
  MenuItem pp_Undo;
  MenuItem pp_Cut,pp_Copy,pp_Paste,pp_Delete;
  MenuItem pp_SelectAll;

  //-----------Face----------------
  TextArea content=new TextArea();
  MyFrame()
  {
    super("记事本");
    mn_File=new Menu("文件");
      mn_File_New=new MenuItem("新建",new MenuShortcut('n'));
      mn_File_Open=new MenuItem("打开...",new MenuShortcut('o'));
      mn_File_Save=new MenuItem("保存",new MenuShortcut('s'));
      mn_File_SaveAs=new MenuItem("另存为...");
      mn_File_PageOption=new MenuItem("页面设置...");
      mn_File_Print=new MenuItem("打印...",new MenuShortcut('p'));
      mn_File_Exit=new MenuItem("退出");
    mn_Edit=new Menu("编辑");
      mn_Edit_Undo=new MenuItem("取消",new MenuShortcut('z'));
      mn_Edit_Cut=new MenuItem("剪切",new MenuShortcut('x'));
      mn_Edit_Copy=new MenuItem("复制",new MenuShortcut('c'));
      mn_Edit_Paste=new MenuItem("粘贴",new MenuShortcut('v'));
      mn_Edit_Delete=new MenuItem("删除");
      mn_Edit_Find=new MenuItem("查找...",new MenuShortcut('f'));
      mn_Edit_FindNext=new MenuItem("查找下一个");
      mn_Edit_Change=new MenuItem("替换...",new MenuShortcut('h'));
      mn_Edit_Goto=new MenuItem("转到",new MenuShortcut('g'));
      mn_Edit_SelectAll=new MenuItem("全选",new MenuShortcut('a'));
      mn_Edit_DateTime=new MenuItem("日期/时间");
    mn_Option=new Menu("格式");
      mn_Option_Warp=new CheckboxMenuItem("自动换行");
      mn_Option_Font=new MenuItem("字体...");
    mn_View=new Menu("查看");
      mn_View_StatusBar=new MenuItem("状态栏");
    mn_Help=new Menu("帮助");
      mn_Help_Help=new MenuItem("帮助主题");
      mn_Help_About=new MenuItem("关于记事本");

    mn_File_New.addActionListener(this);
    mn_File_Open.addActionListener(this);
    mn_File_Save.addActionListener(this);
    mn_File_SaveAs.addActionListener(this);
    mn_File_PageOption.addActionListener(this);
    mn_File_Print.addActionListener(this);
    mn_File_Exit.addActionListener(this);
    mn_Edit_Undo.addActionListener(this);
    mn_Edit_Cut.addActionListener(this);
    mn_Edit_Copy.addActionListener(this);
    mn_Edit_Paste.addActionListener(this);
    mn_Edit_Delete.addActionListener(this);
    mn_Edit_Find.addActionListener(this);
    mn_Edit_FindNext.addActionListener(this);
    mn_Edit_Change.addActionListener(this);
    mn_Edit_Goto.addActionListener(this);
    mn_Edit_SelectAll.addActionListener(this);
    mn_Edit_DateTime.addActionListener(this);
    mn_Option_Warp.addActionListener(this);
    mn_Option_Font.addActionListener(this);
    mn_View_StatusBar.addActionListener(this);
    mn_Help_Help.addActionListener(this);
    mn_Help_About.addActionListener(this);

    MyBar.add(mn_File);
    MyBar.add(mn_Edit);
    MyBar.add(mn_Option);
    MyBar.add(mn_View);
    MyBar.add(mn_Help);

    mn_File.add(mn_File_New);
    mn_File.add(mn_File_Open);
    mn_File.add(mn_File_Save);
    mn_File.add(mn_File_SaveAs);
    mn_File.addSeparator();
    mn_File.add(mn_File_PageOption);
    mn_File.add(mn_File_Print);
    mn_File.addSeparator();
    mn_File.add(mn_File_Exit);
    mn_Edit.add(mn_Edit_Undo);
    mn_Edit.addSeparator();
    mn_Edit.add(mn_Edit_Cut);
    mn_Edit.add(mn_Edit_Copy);
    mn_Edit.add(mn_Edit_Paste);
    mn_Edit.add(mn_Edit_Delete);
    mn_Edit.addSeparator();
    mn_Edit.add(mn_Edit_Find);
    mn_Edit.add(mn_Edit_FindNext);
    mn_Edit.add(mn_Edit_Change);
    mn_Edit.add(mn_Edit_Goto);
    mn_Edit.addSeparator();
    mn_Edit.add(mn_Edit_SelectAll);
    mn_Edit.add(mn_Edit_DateTime);
    mn_Option.add(mn_Option_Warp);
    mn_Option.add(mn_Option_Font);
    mn_View.add(mn_View_StatusBar);
    mn_Help.add(mn_Help_Help);
    mn_Help.addSeparator();
    mn_Help.add(mn_Help_About);

    //----------Popup------------
    pp_Undo=new MenuItem("取消");
    pp_Cut=new MenuItem("剪切");
    pp_Copy=new MenuItem("复制");
    pp_Paste=new MenuItem("粘贴");
    pp_Delete=new MenuItem("删除");
    pp_SelectAll=new MenuItem("全选");

    MyPop.add(pp_Undo);
    MyPop.addSeparator();
    MyPop.add(pp_Cut);
    MyPop.add(pp_Copy);
    MyPop.add(pp_Paste);
    MyPop.add(pp_Delete);
    MyPop.addSeparator();
    MyPop.add(pp_SelectAll);

    pp_Undo.addActionListener(this);
    pp_Cut.addActionListener(this);
    pp_Copy.addActionListener(this);
    pp_Paste.addActionListener(this);
    pp_Delete.addActionListener(this);
    pp_SelectAll.addActionListener(this);
    //==========Popup============
    //----------Face-------------
    content.addMouseListener(new MouseCatch(this));
    content.add(MyPop);

    setLayout(new BorderLayout());
    add("Center",content);
    //==========Face=============
    setMenuBar(MyBar);
    setSize(500,200);

    addWindowListener(new WindowAdpt());
  }
  public void actionPerformed(ActionEvent e)
  {
    if(e.getActionCommand()=="退出")
    {
      dispose();
      System.exit(0);
    }
  }
}
class WindowAdpt extends WindowAdapter
{
  public void windowClosing(WindowEvent e)
  {
    Frame frm=(Frame)(e.getSource());
    frm.dispose();
    System.exit(0);
  }
}
class MouseCatch extends MouseAdapter
{
  MyFrame MyParent;
  MouseCatch(MyFrame t)
  {
    MyParent=t;
  }
  public void mouseReleased(MouseEvent e)
  {
    if(e.isPopupTrigger())
      MyParent.MyPop.show(e.getComponent(),e.getX(),e.getY());
  }
}