把任一窗口的内容存为位图 窗口较小只存文本
.........................................\dd.aps
.........................................\dd.clw
.........................................\dd.cpp
.........................................\dd.dsp
.........................................\dd.dsw
.........................................\dd.h
.........................................\dd.ncb
.........................................\dd.opt
.........................................\dd.plg
.........................................\dd.rc
.........................................\ddDlg.cpp
.........................................\ddDlg.h
.........................................\Debug
.........................................\.....\dd.exe
.........................................\.....\dd.ilk
.........................................\.....\dd.obj
.........................................\.....\dd.pch
.........................................\.....\dd.pdb
.........................................\.....\dd.res
.........................................\.....\ddDlg.obj
.........................................\.....\MyEdit.obj
.........................................\.....\StdAfx.obj
.........................................\.....\vc60.idb
.........................................\.....\vc60.pdb
.........................................\MyEdit.cpp
.........................................\MyEdit.h
.........................................\res
.........................................\...\dd.ico
.........................................\...\dd.rc2
.........................................\Resource.h
.........................................\StdAfx.cpp
.........................................\StdAfx.h