GB_EVENT

#define GB_EVENT ( symbol , type , signature , id ) ...

Declares a event symbol.

symbol is the name of the event.
type is the string representation of the event return type.
signature is the signature of the event.
id is the address of a variable that will receive an event identifier allocated by the interpreter. You must have declared this variable with the DECLARE_EVENT macro.

If an event returns nothing, use NULL as return datatype.