import?javax.microedition.lcdui.*;
import?javax.microedition.midlet.*;
import?java.io.IOException;

//?Canvas繪圖程序

public?class?CanvasDemo?extends?MIDlet?implements?CommandListener?{

	private?Command?exitCommand?=?new?Command（“退出“?Command.EXIT?1）;??//退出命令
	private?Command?backCommand?=?new?Command（“返回“?Command.BACK?3）;??//返回命令
????private?Display?display;??//?設(shè)備的顯示器
????private?List?menuList;??//圖片名的主菜單列表
	private?DrawingCanvas?canvas;??//顯示繪制的圖形
	
	String[]?itemNames?=?{??//顯示列表名稱
????????“直線“
????????“弧“
????????“矩形“
????????“圓角矩形“
????????“三角形“
????????“文字“
????};????

	public?CanvasDemo（）?{
		display?=?Display.getDisplay（this）;?//取得設(shè)備的顯示器
	}
	
	//?重載抽象類MIDlet的抽象方法startApp（）
	protected?void?startApp（）?{
		canvas?=?new?DrawingCanvas（）;??//?創(chuàng)建DrawingCanvas對(duì)象canvas
		canvas.addCommand（exitCommand）;?//?為canvas加上退出命令
		canvas.addCommand（backCommand）;?//?為canvas加上返回命令
		canvas.setCommandListener（this）;?//?為canvas設(shè)置命令監(jiān)聽(tīng)者
	
		
????????int?num?=?i

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????文件??????307094??2004-07-05?02:35??100-1.bmp
?????文件????????2948??2004-07-21?17:54??CanvasDemo$DrawingCanvas.class
?????文件????????3490??2004-07-21?17:54??CanvasDemo.class
?????文件????????5602??2004-07-05?03:32??CanvasDemo.java