Set to TRUE to connect your handler with g_signal_connect_after().
A callback function which is called when the signal is emitted.
The name of signal, must be an existing signal. For a list of available signals, * please see the @link pluginsignals.c Signal documentation @endlink.
The user data passed to the signal handler. If set to NULL then the signal * handler will receive the data set with geany_plugin_register_full() or * geany_plugin_set_data()
Callback array entry type used with the @ref plugin_callbacks symbol.