more explanation
i seem to be able to create a g-object now and i can also access its set-property field
slowly add more code from the book
get-property
define g-type-instance-get-private ffi function binding. it is not defined in cl-cffi-gtk
add the private type to my class
add the private type to my class and also ask for it afterwards
gtype-id doesn't need to be called
add ip-changed signal
signal definition offset is not right
foreign-symbol-pointer gives me the pointer to a function
class-size: 984, instance-size: 40
class-offset: 976

check the offset parameter that g-signal-new receives
speed test on walters pc
define my own defcfun g_signal_new because i don't want to figure out how to call newv
install first property
start my-ip-address-init
my-ip-address-render
transfer some more code from C to lisp
make it compile again