Question

JAVA做WINDOWS画图板的源程序？

Answer 1

楼上的代码我做了一点点改正，我想现在可以正常运行了： //#8.15 //#filename: ShapeMain.java import java.awt.BorderLayout; import java.awt.Button; import java.awt.Color; import java.awt.Container; import java.awt.Graphics; import java.awt.Panel; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import java.awt.event.MouseMotionAdapter; import java.awt.event.MouseMotionListener; import javax.swing.ButtonGroup; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.UIManager; //import javax.swing.Component; public class ShapeMain extends JFrame implements ActionListener,MouseListener,MouseMotionListener{ int x,y,x1,y1,x2,y2,width,height; boolean isFirstPoint = true; //初始化开始画的是线 int drawType = PaintingGround.LINE; //初始化开始不是填充 boolean isFill = false; //添加控件 ButtonGroup btg = new ButtonGroup(); Button btLine = new Button("线"); Button btRectangle = new Button("矩形"); Button btRound = new Button("圆"); Button btEllipse = new Button("椭圆"); Button tbFillState = new Button("填充"); Button button3 = new Button("文本操作"); Button button2 = new Button("清除"); Button button1 = new Button("选择颜色"); Panel buttonPanel = new Panel(); PaintingGround paintingGround = new PaintingGround(); //Main Method public static void main(String[] args) { //设置显示外观 try{ UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); }catch(Exception e) { e.printStackTrace(); } new ShapeMain(); } //构造函数 public ShapeMain() { //控件添加到控件组中 // btg.add(btLine); // btg.add(btRectangle); // btg.add(btRound); // btg.add(btEllipse); buttonPanel.add(btLine); buttonPanel.add(btRectangle); buttonPanel.add(btRound); button