You are using an outdated browser that does not fully support the intranda viewer.
As a result, some pages may not be displayed correctly.

We recommend you use one of the following browsers:

Full text

The 3rd ISPRS Workshop on Dynamic and Multi-Dimensional GIS & the 10th Annual Conference of CPGIS on Geoinformatics
Chen, Jun

ISPRS, Vol.34, Part 2W2, “Dynamic and Multi-Dimensional GIS”, Bangkok, May 23-25, 2001
economic and effective solution for both the system developer
and end-user.
By ActiveX technique, the system developer has a flexible way to
provide their production. They develop ActiveX Controls and
assemble application systems in need. For GIS data exchange,
there is another more important advantage. In GIS data
exchange, the difficulty lies in model interpretation. All users
have their own interpretation. Solution provider of ActiveX
structure reserves this interpretation to the end-user or the
customization of these ActiveX Controls.
By ActiveX technique, we also benefit from the simplicity of code
maintenance. ActiveX supports object-oriented technique and
provides a mechanism of upgrading easily. For example, while
the AutoCAD was upgrading from Version 12.0 to Version 14.0,
we can promptly upgrade the ActiveX Control GeoDxf and
GeoDwg by simply upgrading the previous methods or adding
new methods. The old version end-users ActiveX Control
GeoDxf and GeoDwg can be upgraded via Internet. This
upgrading does not affect the proper running of customized
application, meanwhile the customized application system can
add new function during to the upgrading of its referred ActiveX
In one word, component is the most significant trend of software
engineering. Its reusability provides a totally new way to develop
economic systems. This technique also breaks the traditional
way of developing software. Small companies or even a single
person can have chances to join the software market competition.
GIS industry will also inevitably be affect by this trend. Our
experience of using ActiveX Control to develop GIS module
partially confirmed this conclusion.
Namir Clement Shammas, Secrets of Visual C++ Master,
Pentice Hall, 1994
David J. Krugliski, etc., Programming C++, Microsoft Press, 1999