用VC++6.0写的，实现绘制点、线、面、注记等地图要素，用map类管理起来。还有点的大小、线型，颜色、注记字体的设置！-Written with VC++6.0 to achieve draw points, lines, planes, notes and other map features, together with a map class management. Also point size, line, color, font settings Note!