Qt is used Qwt mobile and zooming still images: Right-level recovery on the right mouse button to restore the original state ctrl+ left mouse button left mouse button to move the image to enlarge ctrl+

QwtWave\main.cpp
.......\qwtwave.cpp
.......\qwtwave.h
.......\QwtWave.pro
.......\QwtWave.pro.user
.......\qwtwave.ui
QwtWave

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