GIS Development Components : ActiveX components
TatukGIS Developer Kernel for ActiveX
A professional grade GIS SDK (software development kit) for developing custom GIS applications for the Windows operating system. The SDK is designed for ActiveX compatible development environments including Visual Basic 6, Visual C++ 6, and Visual Studio.
The SDK’s object-oriented API is comprehensive, with hundreds of classes and thousands of documented methods and properties designed for geospatial application development.