17.如何实现图像的雾化效果？
...........................\MainFrm.cpp
...........................\MainFrm.h
...........................\ReadMe.txt
...........................\Release
...........................\.......\Test.exe
...........................\res
...........................\Resource.h
...........................\res\Test.ico
...........................\...\Test.manifest
...........................\...\Test.rc2
...........................\...\TestDoc.ico
...........................\...\Toolbar.bmp
...........................\stdafx.cpp
...........................\stdafx.h
...........................\Test.cpp
...........................\Test.h
...........................\Test.ncb
...........................\Test.rc
...........................\Test.sln
...........................\Test.suo
...........................\Test.vcproj
...........................\TestDoc.cpp
...........................\TestDoc.h
...........................\TestView.cpp
...........................\TestView.h