环境配置：系统装有jre运行环境。

使用说明：

1.双击drawer.jar文件，应用程序即可运行。

2.单击“Oval”按钮，拖动鼠标，可以在画图板上画圆。

3.单击“Triangle”按钮，拖动鼠标，可以在画图板上画等边三角形。

4.单击“Clear”按钮，画图板清屏。

5.单击“Exitl”按钮，程序退出。

6.单击右键，弹出当前图形的属性面板。可以进行如下操作：

(1)单击“Color Settings”左边图标，可以修改图形颜色（前景色）；

(2)单击“Color Settings”右边图标，可以修改画图板颜色（背景色）；

(3)通过“Size Settings”，可以修改图形线条粗细；

(4)通过“Position & Size Settings”，可以修改图形位置和大小；

7.拖动鼠标，即可拖动当前图形。-environment configuration : System with jre operating environment. Use : 1. Double-click drawer.jar documents, applications can run. 2. Click "Oval" button and drag the mouse, the drawing board Circle. 3. Click the "Triangle" button and drag the mouse, the drawing-board painting equilateral triangle. 4. Click "Clear" button, the screen drawing board. 5. Click "Exitl" button and exit procedures. 6. Right-click, pop-up graphics attributes the current panel. Can proceed as follows : (a) Click "Color Settings" icon left, color graphics can be amended (foreground color); (2) Click "Color Settings" icon right, amend the drawing board in color (the background color); (3) "Size Settings" graphics can be amended to make the lines