Class Hook

data which is passed to func when this hook is invoked

the default finalize_hook function of a #GHookList calls this member of the hook that is being finalized

flags which are set for this hook. See #GHookFlagMask for predefined flags

the function to call when this hook is invoked. The possible signatures for this function are #GHookFunc and #GHookCheckFunc

the id of this hook, which is unique within its list

pointer to the next hook in the list

pointer to the previous hook in the list

the reference count of this hook