Qt 基于QGraphicsView的显示控件，支持放大、缩小、鼠标拖动

[{"title":"（ 9 个子文件 8KB ） Qt 基于QGraphicsView的显示控件，支持放大、缩小、鼠标拖动","children":[{"title":"imageviewer.h <span style='color:#111;'> 1.18KB </span>","children":null,"spread":false},{"title":"msvc_make.bat <span style='color:#111;'> 53B </span>","children":null,"spread":false},{"title":"main.cpp <span style='color:#111;'> 175B </span>","children":null,"spread":false},{"title":"mainwindow.ui <span style='color:#111;'> 3.51KB </span>","children":null,"spread":false},{"title":"mainwindow.cpp <span style='color:#111;'> 1.71KB </span>","children":null,"spread":false},{"title":"mainwindow.h <span style='color:#111;'> 659B </span>","children":null,"spread":false},{"title":"ImageView.pro.user <span style='color:#111;'> 12.23KB </span>","children":null,"spread":false},{"title":"ImageView.pro <span style='color:#111;'> 1.82KB </span>","children":null,"spread":false},{"title":"imageviewer.cpp <span style='color:#111;'> 5.52KB </span>","children":null,"spread":false}],"spread":true}]