MapControl
代码说明：
包括一些图层的基本操作，如鹰眼功能，书签功能、添加图层(Including some of the layers of the basic operations, such as Hawkeye, bookmark function, add layers)
文件列表：
实验一 地图浏览
...............\图层控制
...............\........\MSSCCPRJ.SCC,193,2014-05-16
...............\........\图层控制.frm,1510,2014-05-16
...............\........\图层控制.frx,28076,2014-05-16
...............\........\图层控制.log,554,2014-05-16
...............\........\图层控制.vbp,1418,2014-05-16
...............\........\图层控制.vbw,50,2015-05-04
...............\地图浏览
...............\........\MSSCCPRJ.SCC,190,2014-05-16
...............\........\地图浏览.frm,5284,2014-05-16
...............\........\地图浏览.frx,25449,2014-05-16
...............\........\地图浏览.log,575,2014-05-16
...............\........\地图浏览鹰眼.frm,4397,2014-05-16
...............\........\地图浏览鹰眼.frx,4182,2014-05-16
...............\........\地图浏览鹰眼.log,568,2014-05-16
...............\........\工程1.vbp,1374,2014-05-16
...............\........\工程1.vbw,100,2015-05-04
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