Based on simple drawing VC++ functions, as well as when the program window redraw the graphics have been drawn in the window will disappear without a trace, and solve this problem, how to save drawn graphics and how to reproduce when the window redraw window the previous contents.

简单绘图以及图形的保存和重绘
............................\Debug
............................\.....\MainFrm.obj
............................\.....\MainFrm.sbr
............................\.....\SettingDlg.obj
............................\.....\SettingDlg.sbr
............................\.....\StdAfx.obj
............................\.....\StdAfx.sbr
............................\.....\vc60.idb
............................\.....\vc60.pdb
............................\.....\Zhan.obj
............................\.....\Zhan.sbr
............................\.....\zhang.bsc
............................\.....\zhang.exe
............................\.....\zhang.ilk
............................\.....\zhang.obj
............................\.....\zhang.pch
............................\.....\zhang.pdb
............................\.....\zhang.res
............................\.....\zhang.sbr
............................\.....\zhangDoc.obj
............................\.....\zhangDoc.sbr
............................\.....\zhangView.obj
............................\.....\zhangView.sbr
............................\MainFrm.cpp
............................\MainFrm.h
............................\meta.wmf
............................\ReadMe.txt
............................\res
............................\resource.h
............................\...\background.bmp
............................\...\bitmap2.bmp
............................\...\Toolbar.bmp
............................\...\zhang.ico
............................\...\zhang.rc2
............................\...\zhangDoc.ico
............................\SettingDlg.cpp
............................\SettingDlg.h
............................\StdAfx.cpp
............................\StdAfx.h
............................\Zhan.cpp
............................\Zhan.h
............................\zhang.aps
............................\zhang.clw
............................\zhang.cpp
............................\zhang.dsp
............................\zhang.dsw
............................\zhang.h
............................\zhang.ncb
............................\zhang.opt
............................\zhang.plg
............................\zhang.rc
............................\zhangDoc.cpp
............................\zhangDoc.h
............................\zhangView.cpp
............................\zhangView.h

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