这是个GIS程序，能够实现比例尺放大、缩小、全屏显示，以及在状态栏显示时间和鼠标位置，以及自建一个CDIALOGBAR，来实现画笔的线形和粗细。-This is a GIS procedures, Large scale can be achieved, narrow, full-screen, and the status bar shows the time and location of the mouse, and a self CDIALOGBAR. brush to achieve the linear and thickness.