qt实现的地图浏览器，能对地图进行基本的操作如拖动，放大，缩小。有助于qt的学习-the realization of the map qt browser can map the basic operation such as dragging, zooming and narrow. Contribute to the learning qt

qt实现的地图浏览器，能对地图进行基本的操作如拖动，放大，缩小。有助于qt的学习-the realization of the map qt browser can map the basic operation such as dragging, zooming and narrow. Contribute to the learning qt