捏合缩放范例

Shows how to recognize a gesture.

The Pinch Zoom example shows how to use low-level touch information to recognize a gesture.

文件：

• touch/pinchzoom/graphicsview.cpp
• touch/pinchzoom/graphicsview.h
• touch/pinchzoom/main.cpp
• touch/pinchzoom/mice.qrc
• touch/pinchzoom/mouse.cpp
• touch/pinchzoom/mouse.h
• touch/pinchzoom/pinchzoom.pro

图像：

• touch/pinchzoom/images/cheese.jpg