Program Extension

 Example #1: ( In Visual Basic )

• Scalable Programs: Making and Using Plug-ins for Your VB Apps

 

External Links

• Plug-in Architecture Framework for Beginners

 

Operation

• A set of .dll files are dropped into a plugin folder 
• The program reads the list of dll files in the plugin folder and creates an object of corresponding name
• Each dll plugin has a set of predictable functions that can be called using  ObjectName.FunctionName

 

Advantages

• Can use standard stable methods to add support for new controller models

Disadvantages

• More difficult for "beginners"  ….  not as simple as a script.