Using vc+ mapx procedures manual ranging, use polytoolused event, you can repeat the click, and by measuring the distance between the polygon

Ex_MapX0311手动测距
...................\Ex_MapX.aps
...................\Ex_MapX.clw
...................\Ex_MapX.cpp
...................\Ex_MapX.dsp
...................\Ex_MapX.dsw
...................\Ex_MapX.h
...................\Ex_MapX.ncb
...................\Ex_MapX.opt
...................\Ex_MapX.plg
...................\Ex_MapX.rc
...................\Ex_MapXDoc.cpp
...................\Ex_MapXDoc.h
...................\Ex_MapXView.cpp
...................\Ex_MapXView.h
...................\MainFrm.cpp
...................\MainFrm.h
...................\maps
...................\....\ARGENTIN.GST
...................\....\ASIA.GST
...................\....\AUSTRLIA.GST
...................\....\BRAZIL.GST
...................\....\CANADA.GST
...................\....\dallas.gst
...................\....\DC.GST
...................\....\dc2_sp.gst
...................\....\dc2_sp_wzips.gst
...................\....\DCLemon.gst
...................\....\DCLemon_wzips.gst
...................\....\dc_sp.gst
...................\....\dc_sp_wzips.gst
...................\....\EUROPE.GST
...................\....\ImagePro.gst
...................\....\JAPAN.GST
...................\....\MEXICO.GST
...................\....\MGRS_UPS_NORTH.gst
...................\....\MGRS_UPS_SOUTH.gst
...................\....\MGRS_UTM.gst
...................\....\S_KOREA.GST
...................\....\UK.GST
...................\....\US.GST
...................\....\WORLD.GST
...................\MAPX.CPP
...................\MAPX.H
...................\ReadMe.txt
...................\res
...................\resource.h
...................\...\Ex_MapX.ico
...................\...\Ex_MapX.rc2
...................\...\Ex_MapXDoc.ico
...................\...\Toolbar.bmp
...................\StdAfx.cpp
...................\StdAfx.h

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