glib 0.0.4

Rust bindings for the GLib library
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// Copyright 2015, The Gtk-rs Project Developers.
// See the COPYRIGHT file at the top-level directory of this distribution.
// Licensed under the MIT license, see the LICENSE file or <http://opensource.org/licenses/MIT>

use libc::c_void;

use gobject_ffi::{self, GCallback};
use translate::ToGlibPtr;

pub unsafe fn connect(receiver: *mut c_void, signal_name: &str, trampoline: GCallback,
                      closure: *mut Box<Fn() + 'static>) -> u64 {
    let handle = gobject_ffi::g_signal_connect_data(receiver, signal_name.to_glib_none().0,
        trampoline, closure as *mut _, Some(destroy_closure),
        gobject_ffi::GConnectFlags::empty()) as u64;
    assert!(handle > 0);
    handle
}

unsafe extern "C" fn destroy_closure(ptr: *mut c_void, _: *mut gobject_ffi::GClosure) {
    let ptr = ptr as *mut Box<Fn()>;
    // destroy
    //Box::from_raw(ptr);
    // from_raw API stability workaround
    let _: Box<Box<Fn()>> = ::std::mem::transmute(ptr);
}