Introduction

A GPI is a win32 DLL with the extension '.gpi'. Unlike the previous plug-in types (except for statistical plug-ins) a GPI is loaded on start-up, and remains loaded until ShapeUp terminates.

The GPI needs to export three function in order to be considered valid by ShapeUp:

• fnInit(), for initialisation
• fnVersion(), to tell ShapeUp what version of the API the GPI was built with.
• fnGUID(), to identify this plug-in.

and optionally:

• fnTerminate(), for any clean-up process.

These functions can be exported by declaring them in a .def file for the project.

Now you can proceed to the GPI Message Routing.

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