利用七参数和四参数法实现不同椭球坐标系之间的转换-The use of seven parameters, and four-parameter method to achieve different ellipsoidal coordinate system transformation between

通过Cform文件读取数据，实现测量中四参数、七参数的坐标转换，最后输出结果到list control中。-Read by Form file data to achieve a four-parameter measurements, seven-parameter coordinate transformation, the final output to the list control.