Documentation/4.0/Developers/Modules

Slicer supports 3 types of modules. While the developer has to choose between one of the 3 types to implement its module, the end user won't notice a difference as they all share the look&feel. The choice for a given type of module is usually based on the type of inputs/parameters for a given module.

Command Line Interface (CLI)

- CLIs are standalone executables with a limited input/output arguments complexity (simple argument types, no user interactions...). They are typically implemented using ITK.

• Shared lib or executable
• GUI automatically generated
• execution model

Loadable Modules

• C++ shared library
• Full control over the GUI (Qt) and the Slicer internals (logics, display managers...)
• Optimized for heavy computations

Scripted Modules

• Python
• Full access to the API: VTK, ITK, MRML, Qt, Slicer fully wrapped
• Recommended for fast prototyping