Sets our main struct and passes it to the parent class.
Allocates a new #GtkBorder-struct and initializes its elements to zero.
Copies a #GtkBorder-struct.
Frees a #GtkBorder-struct.
Get the main Gtk struct
the main Gtk struct as a void*
the main Gtk struct
A struct that specifies a border around a rectangular area that can be of different width on each side.