Describe: Write their own CAD system to realize a simple graphic element to add, edit function. I wanted to learn about graphics development friends will help.

File list(time 2004052811~2009121603)(Click to check if it's the file you need, and recomment it at the bottom):
  QGIS
  ....\001.XYZ
  ....\ChildFrm.cpp
  ....\ChildFrm.h
  ....\excel9.cpp
  ....\excel9.h
  ....\GEOPROJECTIONS
  ....\..............\INCLUDE
  ....\..............\.......\albers.h
  ....\..............\.......\azeq.h
  ....\..............\.......\bng.h
  ....\..............\.......\bonne.h
  ....\..............\.......\cassini.h
  ....\..............\.......\cyleqa.h
  ....\..............\.......\datum.h
  ....\..............\.......\eckert4.h
  ....\..............\.......\eckert6.h
  ....\..............\.......\ellipse.h
  ....\..............\.......\engine.h
  ....\..............\.......\eqdcyl.h
  ....\..............\.......\gauss.h
  ....\..............\.......\geocent.h
  ....\..............\.......\geoid.h
  ....\..............\.......\georef.h
  ....\..............\.......\gnomonic.h
  ....\..............\.......\grinten.h
  ....\..............\.......\lambert.h
  ....\..............\.......\loccart.h
  ....\..............\.......\mercator.h
  ....\..............\.......\mgrs.h
  ....\..............\.......\miller.h
  ....\..............\.......\mollweid.h
  ....\..............\.......\neys.h
  ....\..............\.......\nzmg.h
  ....\..............\.......\omerc.h
  ....\..............\.......\orthogr.h
  ....\..............\.......\polarst.h
  ....\..............\.......\polycon.h
  ....\..............\.......\sinusoid.h
  ....\..............\.......\stereogr.h
  ....\..............\.......\tranmerc.h
  ....\..............\.......\trcyleqa.h
  ....\..............\.......\ups.h
  ....\..............\.......\utm.h
  ....\..............\MapProjections.h
  ....\include
  ....\.......\MVC1F7.tmp
  ....\.......\Resource.h
  ....\Lib
  ....\...\QObjects.exp
  ....\...\QObjects.lib
  ....\MainFrm.cpp
  ....\MainFrm.h
  ....\QDlg
  ....\....\DlgLayerManager.cpp
  ....\....\DlgLayerManager.h
  ....\....\DlgLineAttSet.cpp
  ....\....\DlgLineAttSet.h
  ....\....\DlgLineBeThin.cpp
  ....\....\DlgLineBeThin.h
  ....\....\dlgmapattset.cpp
  ....\....\dlgmapattset.h
  ....\....\qdlgptattset.cpp
  ....\....\qdlgptattset.h
  ....\....\QDlgTextSet.cpp
  ....\....\QDlgTextSet.h
  ....\QGIS.APS
  ....\QGIS.clw
  ....\QGIS.cpp
  ....\QGIS.dsp
  ....\QGIS.dsw
  ....\QGIS.h
  ....\QGIS.ncb
  ....\QGIS.opt
  ....\QGIS.plg
  ....\QGIS.rc
  ....\QGIS.sln
  ....\QGIS.vcproj
  ....\QGIS.vcproj.QIQIANG.QQ.user
  ....\QGISAlgorithmLib
  ....\................\Debug
  ....\................\include
  ....\................\.......\C_QGISAlgorithmLib.h
  ....\................\.......\Resource.h
  ....\................\QGISAlgorithmLib.clw
  ....\................\QGISAlgorithmLib.cpp
  ....\................\QGISAlgorithmLib.def
  ....\................\QGISAlgorithmLib.dsp
  ....\................\QGISAlgorithmLib.plg
  ....\................\QGISAlgorithmLib.rc
  ....\................\QGISBin
  ....\................\ReadMe.txt
  ....\................\res
  ....\................\...\QGISAlgorithmLib.rc2
  ....\................\src
  ....\................\StdAfx.cpp
  ....\................\StdAfx.h
  ....\QGISBin
  ....\.......\Debug
  ....\.......\QGIS.exe

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Functions/Classes:
CMDIChildWnd GetParent CString GetActiveWindow GetCursor SetCursor GetPath GetUserName GetVersion DialogBox GetNumberFormat CMDIFrameWnd CRect SetWindowText CWnd CDialog CDataExchange EnableWindow GetDlgItem CComboBox CColorDialog GetDC CDC CBrush SelectObject GetClientRect Rectangle CPaintDC GetWindowRect ClientToScreen SetFocus CFontDialog CWinApp CMultiDocTemplate CCommandLineInfo ShowWindow UpdateWindow CDocument CFileDialog InvalidateRect CFile CStdioFile CFileException CWaitCursor CView GetDeviceCaps CPrintInfo CPoint SetCapture ReleaseCapture Ellipse SetROP2 LineTo CPen CStatusBar CObList ScrollWindow LoadCursor ShowCursor CCmdUI TextOut CClientDC PtInRect SetRect CObject CSize SetMapMode Polygon Polyline CPtrList DeleteObject PatBlt CArray SetTimer ReleaseDC KillTimer MulDiv SetTextColor CFont CreateFontIndirect SetBkMode