This is similar to g_signal_connect_data(), but uses a closure which
ensures that the @gobject stays alive during the call to @c_handler
by temporarily adding a reference count to @gobject.
When the @gobject is destroyed the signal handler will be automatically
disconnected. Note that this is not currently threadsafe (ie:
emitting a signal while @gobject is being destroyed in another thread
is not safe).
This is similar to g_signal_connect_data(), but uses a closure which ensures that the @gobject stays alive during the call to @c_handler by temporarily adding a reference count to @gobject.
When the @gobject is destroyed the signal handler will be automatically disconnected. Note that this is not currently threadsafe (ie: emitting a signal while @gobject is being destroyed in another thread is not safe).