分形维数的估算软件FD3，C++源代码，具有很好的学习价值，是一切分形科学工作的基础。-fractal dimension estimation software FD3, C source code, with good learning value of all fractal science work.

本程序模拟windows画板通过选择画笔的颜色能够画线、圆、矩形等形状，也可选择橡皮擦工具清除所画内容。-This procedure simulated windows drawing board by selecting the color of the pen to draw lines, circles, rectangles and other shapes, can also choose the eraser tool to remove the picture content.