MapObjects is an ole control that can be used in a large number of development frameworks. Here I will introduce the development in the Visual C ++ programming environment. MapObjects is an ole control that provides plotting and GIS functions. It contains more than 45 programmable OLE objects. Features: ① support a wide range of data formats, ② support ODBC and ADO access to database table data source ③ support extended graphic data and Operations ④ support projection ⑤ enhancement GPS function ⑥ space analysis function 7 Support database version management function: ① The symbol chemical fiber is a map of all elements, support for custom symbols ② support for layer management and operations ③ support for various graphic operations ④ add NOTES ⑤ provide various query functions ⑥ provide certain spatial analysis functions 7 provide spatial database access functions ↓ provides Map Printing and output functions; implements GPS navigation.
