Subversion Repositories group.NITPanels

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Runtime.InteropServices;

namespace NITNavComm {

    public class VolumeControl {

        [DllImport("VolControlLib.dll")]

        public static extern int _getDevCount(out uint count);

        [DllImport("VolControlLib.dll",CharSet = CharSet.Ansi,CallingConvention=CallingConvention.StdCall)]

        [return: MarshalAs(UnmanagedType.LPWStr)]

        public static extern string _getDevName(uint dev);

        [DllImport("VolControlLib.dll")]

        public static extern uint _getDevVolume(uint dev, out float volume);

        [DllImport("VolControlLib.dll")]

        public static extern uint _setDevVolume(uint dev, float volume);

        public uint deviceCount { get; set; }

        public List<string> devices { get; set; }

        public VolumeControl() {

            uint count = 0;

            _getDevCount(out count);

            this.deviceCount = count;

            devices = new List<string>();

            if (this.deviceCount > 0) {

                for (uint i = 0; i < this.deviceCount; i++) {

                    this.devices.Add(this.getDeviceName(i));

                }

            }

        }

        public String getDeviceName(uint dev) {

            string s = _getDevName(dev);

            return s;

        }

        public float getDeviceVolume(uint dev) {

            float volume = 0.0F;

            _getDevVolume(dev, out volume);

            return volume;

        }

        public void setDeviceVolume(uint dev, float volume) {

            _setDevVolume(dev, volume);

        }

    }

}