J2ME手机游戏设计案例源代码.GraphicsTest.docVIP

**********Midlet import javax.microedition.lcdui.Display; import javax.microedition.midlet.*; public class Midlet extends MIDlet { private Display display; private GraphicsCanvas canvas; //声明画布对象canvas public Midlet(){ display = Display.getDisplay(this); //获取Display canvas=new GraphicsCanvas(); //创建画布对象canvas display .setCurrent(canvas); //设置canvas为当前显示对象 } public void startApp() { } public void pauseApp() { } public void destroyApp(boolean unconditional) { } } ***********GraphicsCanvas import javax.microedition.lcdui.Canvas; import javax.microedition.lcdui.Graphics; public class GraphicsCanvas extends Canvas{ int gtype; //声明绘图类型 int LineType; //声明绘图线型 protected void paint(Graphics g) { //下面的两行语句用于填充画布背景 g.setColor(0x00ffffff); //设置绘图颜色，实质上是画布背景色 g.fillRect(0, 0, getWidth(), getHeight()); //绘制与画布同大的填充矩形，即填充背景色 g.setColor(0; //设置绘图颜色 g.setStrokeStyle(LineType); //设置线型 drawGraphics(g,gtype); //调用drawGraphics函数进行绘图 } /* 按键事件处理，当按下不同按键时，设置不同的绘图类型 */ protected void keyPressed(int keyCode) { //检查按键常量 if(keyCode == Canvas.KEY_NUM1){ gtype=1; }else if(keyCode == Canvas.KEY_NUM2){ gtype=2; }else if(keyCode == Canvas.KEY_NUM3){ gtype=3; }else if(keyCode == Canvas.KEY_NUM4){ gtype=4; }else if(keyCode == Canvas.KEY_NUM5){ gtype=5; }else if(keyCode == Canvas.KEY_NUM6){ gtype=6; }else if(keyCode == Canvas.KEY_NUM7){ gtype=7; }else if(keyCode == Canvas.KEY_NUM8){ gtype=8; }else if(keyCode == Canvas.KEY_NUM9){ gtype=9; }else if(keyCode == Canvas.KEY_POUND){ LineType=Graphics.SOLID; }else if(keyCode == Canvas.KEY_STAR){ LineType=Graphi