예제 #1
0
        private static AudioDevice CreateDevice(IMMDevice dev)
        {
            if (dev == null)
            {
                return(null);
            }

            string id;

            dev.GetId(out id);
            DEVICE_STATE state;

            dev.GetState(out state);
            Dictionary <string, object> properties = new Dictionary <string, object>();
            IPropertyStore store;

            dev.OpenPropertyStore(STGM.STGM_READ, out store);
            if (store != null)
            {
                int propCount;
                store.GetCount(out propCount);
                for (int j = 0; j < propCount; j++)
                {
                    PROPERTYKEY pk;
                    if (store.GetAt(j, out pk) == 0)
                    {
                        PROPVARIANT value = new PROPVARIANT();
                        int         hr    = store.GetValue(ref pk, ref value);
                        object      v     = value.GetValue();
                        try
                        {
                            if (value.vt != VARTYPE.VT_BLOB) // for some reason, this fails?
                            {
                                PropVariantClear(ref value);
                            }
                        }
                        catch
                        {
                        }
                        string name = pk.ToString();
                        properties[name] = v;
                    }
                }
            }
            return(new AudioDevice(id, (AudioDeviceState)state, properties));
        }
 private static extern int PropVariantClear(ref PROPVARIANT pvar);
        private static AudioDevice CreateDevice(IMMDevice dev)
        {
            if (dev == null)
                return null;

            string id;
            dev.GetId(out id);
            DEVICE_STATE state;
            dev.GetState(out state);
            Dictionary<string, object> properties = new Dictionary<string, object>();
            IPropertyStore store;
            dev.OpenPropertyStore(STGM.STGM_READ, out store);
            if (store != null)
            {
                int propCount;
                store.GetCount(out propCount);
                for (int j = 0; j < propCount; j++)
                {
                    PROPERTYKEY pk;
                    if (store.GetAt(j, out pk) == 0)
                    {
                        PROPVARIANT value = new PROPVARIANT();
                        int hr = store.GetValue(ref pk, ref value);
                        object v = value.GetValue();
                        try
                        {
                            if (value.vt != VARTYPE.VT_BLOB) // for some reason, this fails?
                            {
                                PropVariantClear(ref value);
                            }
                        }
                        catch
                        {
                        }
                        string name = pk.ToString();
                        properties[name] = v;
                    }
                }
            }
            return new AudioDevice(id, (AudioDeviceState)state, properties);
        }
예제 #4
0
 private static extern int PropVariantClear(ref PROPVARIANT pvar);