📄 calccanvas.java~1~
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package my.calc;import com.nokia.mid.ui.FullCanvas;import javax.microedition.lcdui.*;public class CalcCanvas extends FullCanvas{ /**退出按钮*/ private Command cmdExit; /**标题*/ private String title = "Calculator"; /**字体*/ private Font f; /**显示的数字*/ private int result = 0; /**焦点编号*/ private int num = 0; /**焦点图片的坐标*/ private int x = 0; private int y = 0; /**默认构造方法*/ public CalcCanvas() {} public void paint(Graphics g) { f = g.getFont(); //绘制标题 g.drawString(title,getWidth() / 2,f.getHeight() / 2,Graphics.TOP|Graphics.HCENTER); //绘制文本框 g.drawRect(3,24,172,20); //绘制数字 String temp = Integer.toString(result); g.drawString(temp,getWidth() - temp.length() / 2 - 3,30,Graphics.TOP|Graphics.RIGHT); //绘制面板 }}
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