主要功能：

1.动态显示数据。在类中定义了两个大小为2000的double型数值。可显示小于2000组的X,Y数据。动态显示的原理为实时更新数据。只要更新x,y数据，在显示界面就会及时显示。

2.数据捕捉功能。当鼠标靠近数据点时，十字线会绘制一个红色的矩形捕捉框。

3.支持曲线平移，缩放，网格开关，时间显示以及文字说明。平移时，按住右键拖动鼠标；缩放时按住鼠标中键拖动鼠标。

4.支持颜色设置，具体可看弹出菜单。双击鼠标右键，弹出菜单可进行相应的操作。

5.类主要封装了一些设置函数和文件存储读取函数，在具体样例程序中列举了一些函数。具体函数可见点h文件，上面有具体说明。-Main features:

1. Dynamic display data. in the class defines two types of size 2000 double value. Group to show less than 2000 X, Y data. The principle of dynamic display is updated in real time data. As long as the updated x, y data in a timely manner in the display screen will display.

2. Data capture. When the mouse is near the data points, the cross line to draw a red rectangle will capture the box.

3. Support the curve of pan, zoom, grid switch, time display, and text. Pan, hold down the right-drag the mouse　zoom, hold down the mouse button drag the mouse.

4. Support the color settings, specifically to see the pop-up menu. Double-click the right mouse button, pop-up menu for the appropriate action.

5. Principal function encapsulates some of the settings and file storage read function, in a specific sample program listed a number of functions. H files visible point specific function, the above specific descr iption.