java绘制自定义窗体.docx

java自定义窗体大家都说java图形界面不尽人意，相比C#，VB的快捷方便简直不可同日而语。但是如果仔细研究的话，也不尽然，我们通过代码同样可以实现自己想要的漂亮界面。下面就给大家介绍一下，如何使用java自己定义一个去除系统边框，使用自己喜欢的图片作为窗体主体的方法。简述一下方法步骤：1. 去除系统边框2. 为窗体设置一个放置组件的容器JPanel，并设置布局3. 向容器中添加标题栏，然后添加鼠标监听事件4.加入主体部分此程序为java经典案例之一，初级必学，在此分享给大家，感谢那些帮助我，启发我的朋友们！import java.awt.BorderLayout;import java.awt.Dimension;import java.awt.FlowLayout;import java.awt.Graphics;import java.awt.GridLayout;import java.awt.Image;import java.awt.Point;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.awt.event.ItemEvent;import java.awt.event.ItemListener;import java.awt.event.MouseAdapter;import java.awt.event.MouseEvent;import java.awt.event.MouseMotionAdapter;import java.io.File;import java.io.IOException;import javax.imageio.ImageIO;import javax.swing.ImageIcon;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JPanel;import javax.swing.JToggleButton;public class MyImgFrame extends JFrame JPanel contentPanel; Point pressedPoint; public MyImgFrame() throws IOException this.setUndecorated(true); this.setDefaultCloseOperation(EXIT_ON_CLOSE); this.setBounds(200, 80, 400, 380); this.setVisible(true); /this.pack(); contentPanel=new JPanel(); contentPanel.setBorder(null); contentPanel.setLayout(new BorderLayout(0,0); this.setContentPane(contentPanel); MyBacPanel topPanel=new MyBacPanel(); Image topimg=ImageIO.read(new File(E:Images15.jpg); Dimension dim=new Dimension(topimg.getWidth(this),topimg.getHeight(this); topPanel.setPreferredSize(dim); topPanel.setImg(topimg); topPanel.addMouseMotionListener(new MouseMotionAdapter() public void mouseDragged(MouseEvent e) topPanel_mouseDragged(e); ); topPanel.addMouseListener(new MouseAdapter() public void mousePressed(MouseEvent e) topPanel_mousePressed(e); ); contentPanel.add(topPanel,BorderLayout.NORTH); topPanel.setLayout(new FlowLayout(FlowLayout.RIGHT,5,5); JPanel controlJP=new JPanel(); controlJP.setPreferredSize(new Dimension(60,22); controlJP.setOpaque(false); topPanel.add(controlJP); controlJP.setLayout(new GridLayout(1, 0, 0, 0); JButton minJB=new JButton(); controlJP.add(minJB); minJB.setRolloverIcon(new ImageIcon(E:Imagesmyicon24.jpg); minJB.addActionListener(new ActionListener() public void actionPerformed(ActionEvent e) minJB_actionPerformed(e); ); minJB.setFocusPainted(false); minJB.setBorderPainted(false); minJB.setContentAreaFilled(false); minJB.setIcon(new ImageIcon(E:Imagesmyicon24.jpg); JToggleButton maxJB=new JToggleButton(); controlJP.add(maxJB); maxJB.setRolloverIcon(new ImageIcon(E:Imagesmyicon23.jpg); maxJB.addItemListener(new ItemListener() public void itemStateChanged(ItemEvent e) maxJB_itemStateChanged(e); ); maxJB.setRolloverSelectedIcon(new ImageIcon(E:Imagesmyicon21.jpg); maxJB.setIcon(new ImageIcon(E:Imagesmyicon23.jpg); maxJB.setFocusPainted(false); maxJB.setBorderPainted(false); maxJB.setContentAreaFilled(false); JButton closeJB=new JButton(); controlJP.add(closeJB); closeJB.addActionListener(new ActionListener() public void actionPerformed(ActionEvent e) closeJB_actionPerformed(e); ); closeJB.setRolloverIcon(new ImageIcon(E:Imagesmyicon22.jpg); closeJB.setIcon(new ImageIcon(E:Imagesmyicon22.jpg); closeJB.setFocusPainted(false); closeJB.setBorderPainted(false); closeJB.setContentAreaFilled(false); MyBacPanel mainJP=new MyBacPanel(); mainJP.setImg(ImageIO.read(new File(E:Images20.jpg); contentPanel.add(mainJP,BorderLayout.CENTER); void topPanel_mouseDragged(MouseEvent e) Point point=e.getPoint(); Point localPoint=this.getLocation(); int x=point.x+localPoint.x-pressedPoint.x; int y=point.y+localPoint.y-pressedPoint.y; setLocation(x,y); void topPanel_mousePressed(MouseEvent e) pressedPoint=e.getPoint(); void minJB_actionPerformed(ActionEvent e) this.setExtendedState(ICONIFIED); void maxJB_itemStateChanged(ItemEvent e) if(e.getStateChange()=ItemEvent.SELECTED) this.setExtendedState(MAXIMIZED_BOTH); else this.setExtendedState(NORMAL); void closeJB_actionPerformed(ActionEvent e) this.dispose(); class MyBacPanel extends JPanelprivate Image img;public MyBacPanel()super();this.setOpaque(false);this.setLayout(null)