C# (CSharp) LibFluidsynth.fluid_sequencer_register_client示例

示例#1

        public unsafe SequencerClientId RegisterClient(string name, SequencerEventCallback callback)
        {
            ThrowIfDisposed();

            LibFluidsynth.fluid_event_callback_t wrapper = null;
            var callbackPtr = IntPtr.Zero;

            if (callback != null)
            {
                wrapper = (time, @event, seq, data) =>
                {
                    using (var ev = new SequencerEvent(@event))
                    {
                        callback(time, ev);
                    }
                };

                callbackPtr = Marshal.GetFunctionPointerForDelegate(wrapper);
            }

            var id = LibFluidsynth.fluid_sequencer_register_client(Handle, name, callbackPtr, null);

            if (id == LibFluidsynth.FluidFailed)
            {
                throw new FluidSynthInteropException("fluid_sequencer_register_client failed");
            }

            if (wrapper != null)
            {
                _clientCallbacks.Add(id, wrapper);
            }

            return(new SequencerClientId(id));
        }