自定义数据类型
Custom data types are used to store, edit and copy special, non-trivial data types. Custom data types are based on CustomDataTypeClass and ResourceDataTypeClass .
Such data types can be stored in a GeData or BaseContainer object. See GeData Manual and BaseContainer Manual . Custom data types are dispalyed in GeDialog based UI elements with custom GUI elements. See Custom GUI Elements .
Build-in custom data types are: