Hi everyone,
I am trying out the FFI functionality of PicoLisp and am having some
difficulty understanding how struct arguments are passed when the struct in
question contains nested structs. My question is do I have to somehow
describe the whole thing using nested list structure or there is simpler
way? (this is PicoLisp we are talking about after all)
To illustrate/clarify the question, here is an example:
I want to talk to libxcb and for this I do
(native "libxcb.so" "xcb_connect"
'(I N I N N N N N)
0 0 ) # Passing NULL to the arguments is fine
The result of this should be xcb_connection_t struct which contains what
.. more structs.
If I am to check whether the connection is done I have to issue another
'native' call to 'xcb_connection_has_error' function which takes the output
of 'xcb_connect'
To paraphrase my initial question - how do I do that in the simplest way
possible?
Ref:
xcb_connection_t
<https://xcb.freedesktop.org/manual/structxcb__connection__t.html>
xcb_connection_has_error
<https://xcb.freedesktop.org/manual/group__XCB__Core__API.html#ga70a6bade94bd2824db552abcf5fbdbe3>
xcb_connect
<https://xcb.freedesktop.org/manual/group__XCB__Core__API.html#ga094470586356d1764e69c9a1882966c3>
--- Nicola
