基于nios的画图程序，可以实现画线画圆画点的。用从开发的画图函数。-Nios-based paint program, draw a circle draw lines can be achieved points. With the drawing functions from the development.

这个VC++程序的是功能是实现在窗口绘制矩形、椭圆、多边形等图形-This is the VC++ program function is to achieve in the window draw a rectangle, ellipse, polygon and other graphic

画心电图，利用了双缓冲区，是学习画图程序的好例子，好好研究一下吧！-Painting electrocardiogram, use the double buffer, is a good example of learning drawing program, good research about it.