实例15  获得指定点颜色
......................\PtClr
......................\.....\Debug
......................\.....\.....\PtClr.exe
......................\.....\.....\PtClr.ilk
......................\.....\.....\PtClr.obj
......................\.....\.....\PtClr.pch
......................\.....\.....\PtClr.pdb
......................\.....\.....\PtClr.res
......................\.....\.....\PtClrDlg.obj
......................\.....\.....\StdAfx.obj
......................\.....\.....\vc60.idb
......................\.....\.....\vc60.pdb
......................\.....\PtClr.aps
......................\.....\PtClr.clw
......................\.....\PtClr.cpp
......................\.....\PtClr.dsp
......................\.....\PtClr.dsw
......................\.....\PtClr.h
......................\.....\PtClr.ncb
......................\.....\PtClr.opt
......................\.....\PtClr.plg
......................\.....\PtClr.rc
......................\.....\PtClrDlg.cpp
......................\.....\PtClrDlg.h
......................\.....\ReadMe.txt
......................\.....\res


......................\.....\...\PtClr.rc2
......................\.....\resource.h
......................\.....\StdAfx.cpp
......................\.....\StdAfx.h