Function

GObjectsignal_add_emission_hook

Declaration

gulong
g_signal_add_emission_hook (
  guint signal_id,
  GQuark detail,
  GSignalEmissionHook hook_func,
  gpointer hook_data,
  GDestroyNotify data_destroy
)

Description

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.

Parameters

signal_id

Type: guint

The signal identifier, as returned by g_signal_lookup().

detail

Type: GQuark

The detail on which to call the hook.

hook_func

Type: GSignalEmissionHook

A GSignalEmissionHook function.

hook_data

Type: gpointer

User data for hook_func.

The argument can be NULL.

The data is owned by the caller of the function.

data_destroy

Type: GDestroyNotify

A GDestroyNotify for hook_data.

The argument can be NULL.

Return value

Type: gulong

The hook id, for later use with g_signal_remove_emission_hook().