Sets our main struct and passes it to the parent class.
If @info is statically allocated does nothing. Otherwise increases the reference count.
Get the main Gtk struct
the main Gtk struct as a void*
If @info is statically allocated, does nothing. Otherwise decreases the reference count of @info. When its reference count drops to 0, the memory used is freed.
the main Gtk struct
Information about a signal on a D-Bus interface.