GIS的开发一个小的实例，具体是用C++实现读写shape文件，相当于GIS的最底层开发，适用于初学者。-GIS in the development of a small example of the concrete is to use C++, reading and writing shape files, equivalent to the lowest level of development of GIS for beginners.

现象：poi账票数据量大时,发生内存溢出 C语言 实现2维图像编辑 -Phenomenon: poi votes amount of data loss occurs when memory overflow C language 2D image editing