1 Introduction to the FLI

1.5 Summary

In this chapter an introduction to some of the FLI functions and types was presented. Some examples demonstrating how to interface LispWorks with Windows and C functions were presented. The first example involved defining a foreign function usingdefine-foreign-function to call a C function that converts between Farenheit and Celsius. The second involved setting up foreign types, using the FLI macrosfli:define-c-typedef andfli:define-c-struct, and defining a foreign function using the FLI macrofli:define-foreign-function, with which to obtain data from the Windows functionGetCursorPos. The third example consisted of defining a foreign function to pass data to the Windows functionSetCursorPos. A further example illustrated how to manage the allocation of memory for creating instances of foreign objects more carefully using the FLI macrofli:with-dynamic-foreign-object.