VC++ 按比例缩放图片

[{"title":"（ 51 个子文件 28.43MB ） VC++ 按比例缩放图片","children":[{"title":"show.sln <span style='color:#111;'> 879B </span>","children":null,"spread":false},{"title":"show.sdf <span style='color:#111;'> 82.25MB </span>","children":null,"spread":false},{"title":"show","children":[{"title":"show.vcxproj.filters <span style='color:#111;'> 2.60KB </span>","children":null,"spread":false},{"title":"showDoc.h <span style='color:#111;'> 835B </span>","children":null,"spread":false},{"title":"stdafx.cpp <span style='color:#111;'> 137B </span>","children":null,"spread":false},{"title":"showDoc.cpp <span style='color:#111;'> 2.41KB </span>","children":null,"spread":false},{"title":"res","children":[{"title":"show.ico <span style='color:#111;'> 66.19KB </span>","children":null,"spread":false},{"title":"showDoc.ico <span style='color:#111;'> 4.60KB </span>","children":null,"spread":false},{"title":"Toolbar.bmp <span style='color:#111;'> 1.05KB </span>","children":null,"spread":false},{"title":"show.rc2 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790.30KB </span>","children":null,"spread":false},{"title":"show.obj <span style='color:#111;'> 52.82KB </span>","children":null,"spread":false},{"title":"rc.read.1.tlog <span style='color:#111;'> 3.51KB </span>","children":null,"spread":false},{"title":"cl.command.1.tlog <span style='color:#111;'> 4.09KB </span>","children":null,"spread":false},{"title":"link-cvtres.read.1.tlog <span style='color:#111;'> 2B </span>","children":null,"spread":false},{"title":"show.res <span style='color:#111;'> 867.11KB </span>","children":null,"spread":false},{"title":"link-mt.read.1.tlog <span style='color:#111;'> 2B </span>","children":null,"spread":false},{"title":"link.write.1.tlog <span style='color:#111;'> 1.52KB </span>","children":null,"spread":false},{"title":"showDoc.obj <span style='color:#111;'> 55.72KB </span>","children":null,"spread":false},{"title":"link-rc.write.1.tlog <span style='color:#111;'> 2B </span>","children":null,"spread":false},{"title":"link-mt.write.1.tlog <span style='color:#111;'> 2B </span>","children":null,"spread":false},{"title":"link-cvtres.write.1.tlog <span style='color:#111;'> 2B </span>","children":null,"spread":false},{"title":"link.command.1.tlog <span style='color:#111;'> 2.33KB </span>","children":null,"spread":false},{"title":"link-rc.read.1.tlog <span style='color:#111;'> 2B </span>","children":null,"spread":false},{"title":"rc.command.1.tlog <span style='color:#111;'> 708B </span>","children":null,"spread":false},{"title":"link.read.1.tlog <span style='color:#111;'> 6.32KB </span>","children":null,"spread":false},{"title":"vc110.pdb <span style='color:#111;'> 6.30MB </span>","children":null,"spread":false},{"title":"show.pch <span style='color:#111;'> 35.81MB </span>","children":null,"spread":false},{"title":"MainFrm.obj <span style='color:#111;'> 35.08KB </span>","children":null,"spread":false},{"title":"show.log <span style='color:#111;'> 1.82KB </span>","children":null,"spread":false}],"spread":false},{"title":"ReadMe.txt 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