Adds an emission hook for a signal, which will get called for any emission of that signal, independent of the instance. This is possible only for signals which don't have G_SIGNAL_NO_HOOKS flag set.
the signal identifier, as returned by g_signal_lookup().
the detail on which to call the hook.
a GSignalEmissionHook function.
user data for hook_func.
a GDestroyNotify for hook_data.
the hook id, for later use with g_signal_remove_emission_hook().
Adds an emission hook for a signal, which will get called for any emission of that signal, independent of the instance. This is possible only for signals which don't have G_SIGNAL_NO_HOOKS flag set.