调用colorbar函数，实现点击相应区域，画刷变为相应颜色。即调色板功能，同时还可以手写输入，存储手写输入，载入图片等功能-Call colorbar function, click on the appropriate region to achieve, the brush into the corresponding color. Namely palette functions, but also can be handwritten input, storage handwritin

通过linux的framebuffer层，封装简单的画点画线等基本API 函数，可供主函数调用-By the linux framebuffer layer packaging line stipple simple basic API functions, the main function calls available

调用line（）函数与plot（）函数，运用for循环命令。 线宽5，线条颜色为黑色，填充颜色与线条颜色不同。 坐标轴取等长刻度，标题：正五角星，x轴、y轴加上标注。-Calling line () function with the plot () function, use a for loop command. 5 width, line color is black, filled with color and line color is different. Take the