Question

java图形界面子窗体怎么弄？

java图形界面子窗体怎么弄？ 高点代码来 加上注释 谢谢

Answer 1

给你一段我自己用Swing写的MDI（多文档用户界面）的代码，仅供参考： package com.jb.cdjj.y2t027.flydream.hrms.swing;import java.awt.AWTEvent;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.beans.PropertyVetoException;
import java.text.SimpleDateFormat;
import java.util.Calendar;import javax.swing.BorderFactory;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JDesktopPane;
import javax.swing.JFrame;
import javax.swing.JInternalFrame;
import javax.swing.JLabel;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JProgressBar;
import javax.swing.JScrollPane;
import javax.swing.JSeparator;
import javax.swing.JToolBar;
import javax.swing.Timer;
import javax.swing.border.BevelBorder;import com.jb.cdjj.y2t027.flydream.hrms.pojo.UsersPojo;
import com.jb.cdjj.y2t027.flydream.hrms.swing.component.JDesktopScrollPane;
import com.jb.cdjj.y2t027.flydream.hrms.swing.utils.CharacterCommon;/**
* <p>描述：FrmMain 主界面视窗UI类
* <p>作者：邓超
* <p>班级：Y2T027 FlyDream 小组
* <p>时间：2009-5-13
* <p>地点：宿舍
* <p>版本：1.0.0.1
*/
public class FrmMain extends JFrame { /**
* 序列化版本ID
*/
private static final long serialVersionUID = -6893438572255430328L; {
// 设置UI感观效果（使用三方jar包：looks-2.1.4.jar）
try {
javax.swing.UIManager.setLookAndFeel("com.jgoodies.looks.plastic.PlasticXPLookAndFeel");
} catch(Exception e) {
e.printStackTrace();
}
} /**
* UI组件
*/
private JMenuItem mnuItemHelpTopic;
private JPanel pnlMain;
private JMenu mnuHelp;
private JMenuItem mnuItemDelete;
private JPanel pnlTlb;
private JSeparator septEdit;
private JMenuItem mnuItemPaste;
private JMenuItem mnuItemCopy;
private JMenuItem mnuItemCut;
private JMenu mnuEdit;
private JMenuItem mnuItemLock;
private JMenuItem mnuItemExit;
private JSeparator septSystemBottom;
private JMenuItem mnuItemAbout;
private JMenuItem mnuItemLogout;
private JSeparator septSystemTop;
private JMenuItem mnuItemPermissions;
private JMenuItem mnuItemParamConfig;
private JLabel lblLoginUser;
private JScrollPane pnlScrollContent;
private JMenuItem mnuCloseAll;
private JSeparator septWindow;
private JMenuItem mnuItemCloseCurrent;
private JMenuItem mnuItemSwitch;
private JMenu mnuWindow;
private JLabel lblTime;
private JLabel lblProgressMsg;
private JProgressBar progressOperation;
private JDesktopPane pnlDsk;
private JPanel pnlStatus;
private JButton btnHelp;
private JButton btnExit;
private JButton btnLogout;
private JButton btnLockScreen;
private JToolBar tlbMain;
private JMenu mnuSystem;
private JMenuBar mnuBarMain;
private JButton btnPermissions;
private JButton btnParamConfig;
private JLabel lblTlbSpliter2;
private JLabel lblTlbSpliter1;
private JMenuItem mnuModifyPwd;
private static FrmLogin frmLogin;
private JPanel pnlContent;
private static UsersPojo currentLoginUser; /**
* 获取当前登录用户
* @return 当前登录用户实体
*/
public static UsersPojo getCurrentLoginUser() {
return currentLoginUser;
}
/**
* 设置当前登录用户
* @param currentLoginUser 当前登录用户实体
*/
public static void setCurrentLoginUser(UsersPojo currentLoginUser) {
FrmMain.currentLoginUser = currentLoginUser;
} /**
* 参数化构造器
* @param loginWindow 登录UI实例
*/
public FrmMain(FrmLogin loginWindow) {
super();
frmLogin = loginWindow;
initGUI();
this.addComponentListener(new ComponentAdapter(){ /**
* 组件显示事件方法
*/
@Override
public void componentShown(ComponentEvent e) {
lblLoginUser.setText("【"
+ (currentLoginUser != null
? (currentLoginUser.getLoginAccount() + "/" + currentLoginUser.getUsersName())
: "未登录")
+ "】");
super.componentShown(e);
}

});
}

/**
* UI组件初始化方法
*/
private void initGUI() {
try {
{
BorderLayout thisLayout = new BorderLayout();
getContentPane().setLayout(thisLayout);
}
{
mnuBarMain = new JMenuBar();
setJMenuBar(mnuBarMain);
{
mnuSystem = new JMenu();
mnuBarMain.add(mnuSystem);
mnuSystem.setText("系统(S)");
mnuSystem.setMnemonic(java.awt.event.KeyEvent.VK_S);
mnuSystem.setName("mnuSystem");
mnuSystem.setDoubleBuffered(false);
{
mnuItemParamConfig = new JMenuItem();
mnuSystem.add(mnuItemParamConfig);
mnuItemParamConfig.setText("参数设置(P)...");
mnuItemParamConfig.setToolTipText("前台系统字典及参数设置");
mnuItemParamConfig.setMnemonic(java.awt.event.KeyEvent.VK_P);
mnuItemParamConfig.setName("mnuItemParamConfig");
mnuItemParamConfig.setIcon(new ImageIcon(getClass().getClassLoader().getResource("img/Param.png")));
mnuItemParamConfig.setDoubleBuffered(false);
mnuItemParamConfig.addActionListener(new ActionListener() {
/**
* 激活参数设置菜单项的事件方法
*/
public void actionPerformed(ActionEvent e) {
openOnlyOneInternalFrame(FrmInlParam.getInstance());
}
});
}
{
mnuItemPermissions = new JMenuItem();
mnuSystem.add(mnuItemPermissions);
mnuItemPermissions.setText("权限管理(E)...");
mnuItemPermissions.setToolTipText("系统用户及其授权管理");
mnuItemPermissions.setName("mnuItemPermissions");
mnuItemPermissions.setMnemonic(java.awt.event.KeyEvent.VK_E);
mnuItemPermissions.setIcon(new ImageIcon(getClass().getClassLoader().getResource("img/Permissions.png")));
mnuItemPermissions.setDoubleBuffered(false);
mnuItemPermissions.addActionListener(new ActionListener() {
/**
* 激活权限管理菜单项的事件方法
*/
public void actionPerformed(ActionEvent e) {
openOnlyOneInternalFrame(FrmInlPermissions.getInstance());
}
});
}
{
septSystemTop = new JSeparator();
mnuSystem.add(septSystemTop);
septSystemTop.setName("septSystemTop");
septSystemTop.setDoubleBuffered(false);
}
----------------------------------字数太多，只能分开发。

Answer 2

实在太长了！我都贴了好几次都没贴完，把核心方法给你贴出来： /**
* 保证只打开一个内部视窗的方法
* @param frame 要呼叫的内部视窗对象引用
*/
private void openOnlyOneInternalFrame(JInternalFrame frame) {
// 获取桌面面板组件数组
JInternalFrame[] frames = pnlDsk.getAllFrames();
boolean isExist = false;
// 遍历查找指定引用的内部视窗组件是否存在
for (JInternalFrame tmpFrame : frames) {
if (tmpFrame == frame) {
isExist = true;
}
}
// 如果不存在则添加到桌面面板
if (!isExist) {
pnlDsk.add(frame);
// 设置内部视窗位置居中
int x = (pnlDsk.getWidth() - frame.getWidth()) / 2;
int y = (pnlDsk.getHeight() - frame.getHeight()) / 2;
frame.setLocation(x, y);
}
// 将被呼叫内部视窗重新以默认方式布局（解决最小化后还原默认大小的问题）
frame.pack();
// 将被呼叫内部视窗显示
frame.setVisible(true);
// 将被呼叫内部视窗置顶
// 方式一： 从类 java.awt.Window 继承的方法
// frame.toFront();
// 方式二：从类 javax.swing.JInternalFrame 继承的方法
frame.moveToFront();

// 将被呼叫内部视窗设置为选中状态（标题栏高亮）
try {
frame.setSelected(true);
} catch (PropertyVetoException ex) {
ex.printStackTrace();
}
} ------------------------------------- 要源代码就加我QQ，或发我QQ邮件，我回给你。

Answer 3

先写好两个窗体，在主窗体中将其实例化，并将其设置为可见！！