VC++窗口视图缩放的源代码，其中的难点正在于理解坐标系统的含义、各种映射模式的意义以及与逻辑坐标的转换，这个小程序将逐一进行演示和注释。 -VC++ window, view the source code for scaling, in which the difficulty is on understanding the meaning of coordinate system, the significance of the various mapping models as w

基于对话框实现了大地坐标与三维坐标之间的互相转换-Use VC++, based on the dialog box to achieve the mutual conversion between geodetic coordinates and the three-dimensional coordinates of