Description: qt5 do a simple drawing board, the novice, there are some bug, mutual encouragement
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pro2-painter
............\image
............\.....\background.png
............\.....\clear.png
............\.....\eraser.png
............\.....\meihua.jpg
............\.....\qidong.jpg
............\.....\rot90.png
............\.....\zoomin.png
............\.....\zoomout .png
............\image.qrc
............\main.cpp
............\mainwidget.cpp
............\mainwidget.h
............\paintarea.cpp
............\paintarea.h
............\pro2-painter.pro
............\pro2-painter.pro.user