QGraphicsViewSceneQGraphicsPixmapItem. can zoom the picture according to the current position of the mouse in the scene, so the picture is always fixed relative to the mouse position.

Filename	Size	Update
ZoomPixmapV4	0	2017-06-29
ZoomPixmapV4\Open.png	5802	2017-05-05
ZoomPixmapV4\PixmapView.pro	1129	2017-06-29
ZoomPixmapV4\PixmapView.pro.user	23885	2017-06-29
ZoomPixmapV4\bitmap_image.hpp	247111	2017-06-07
ZoomPixmapV4\bitmap_test.cpp	20479	2017-06-07
ZoomPixmapV4\graphicsview.cpp	5150	2017-06-29
ZoomPixmapV4\graphicsview.h	1543	2017-06-15
ZoomPixmapV4\images.qrc	92	2017-06-15
ZoomPixmapV4\main.cpp	183	2017-06-15
ZoomPixmapV4\mainwindow.cpp	7850	2017-06-29
ZoomPixmapV4\mainwindow.h	730	2017-06-29
ZoomPixmapV4\mainwindow.ui	3674	2017-06-29

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