Method register

native/shared/src/frame_callbacks.rs:36–47

Register a callback with a priority. Returns an ID for removal. Lower priority numbers run first (matching R3F convention).

(&mut self, priority: i32, callback: extern "C" fn(f64))

    /// Register a callback with a priority. Returns an ID for removal.
    /// Lower priority numbers run first (matching R3F convention).
    pub fn register(&mut self, priority: i32, callback: extern "C" fn(f64)) -> u64 {
        let id = self.next_id;
        self.next_id += 1;
        self.callbacks.push(FrameCallback {
            priority,
            callback,
            active: true,
        });
        self.ids.push(id);
        self.sorted = false;
        id
    }

    /// Unregister a callback by ID.
    pub fn unregister(&mut self, id: u64) {