libbtng API Reference: Callback and Callback2

Callback and Callback2 are function pointer types. Both take a single (generic) void* pointer. Callback has no return value, Callback2 returns a generic void* pointer.

Syntax

void fn(void *p)
{
  // do something
}
Callback f1=fn;

void *fn2(void *);
{
  // do something
}

Callback2 f2=fn2;

Remarks

See also: EventCallback.