ffi.rs

#![allow(non_camel_case_types, non_snake_case, unused_variables, unused_macros)]

// #[macro_use]
// #[path = "src/macros.rs"]
// mod macros;
macro_rules! FN {
    (stdcall $func:ident($($t:ty,)*) -> $ret:ty) => (
        pub type $func = Option<unsafe extern "system" fn($($t,)*) -> $ret>;
    );
    (stdcall $func:ident($($p:ident: $t:ty,)*) -> $ret:ty) => (
        pub type $func = Option<unsafe extern "system" fn($($p: $t,)*) -> $ret>;
    );
    (cdecl $func:ident($($t:ty,)*) -> $ret:ty) => (
        pub type $func = Option<unsafe extern "C" fn($($t,)*) -> $ret>;
    );
    (cdecl $func:ident($($p:ident: $t:ty,)*) -> $ret:ty) => (
        pub type $func = Option<unsafe extern "C" fn($($p: $t,)*) -> $ret>;
    );
}

pub enum c_void { }
pub type c_uchar = u8;
pub type c_ulong = u64;

pub type DWORD = c_ulong;
pub type UCHAR = c_uchar;
pub type BOOLEAN = UCHAR;
pub type USHORT = u16;
pub type ADDRESS_FAMILY = USHORT;
pub type PVOID = *mut c_void;
pub type HANDLE = *mut c_void;
pub type NETIO_STATUS = DWORD;
pub type NETIOAPI_API = NETIO_STATUS;

// type PIPFORWARD_CHANGE_CALLBACK = Option<unsafe extern "system" fn(CallerContext: PVOID)>;
FN!{stdcall PIPFORWARD_CHANGE_CALLBACK(
    CallerContext: PVOID,
    // Row: PMIB_IPFORWARD_ROW2,
    // NotificationType: MIB_NOTIFICATION_TYPE,
) -> ()}


extern "system" {
    pub fn NotifyRouteChange2(
        AddressFamily: ADDRESS_FAMILY,
        Callback: PIPFORWARD_CHANGE_CALLBACK,
        // CallerContext: PVOID,
        // InitialNotification: BOOLEAN,
        // NotificationHandle: *mut HANDLE,
    ) -> NETIOAPI_API;
}


pub unsafe extern "system" fn callback_fn(CallerContext: PVOID)  {
    println!("ok.");
}

pub fn foo() {
    let callback: PIPFORWARD_CHANGE_CALLBACK = Some(callback_fn);
    unsafe {
        NotifyRouteChange2(0, callback  );
    }   
}

fn main() {
    // foo();
}