Exemple #1
0
        public IDictionary <IOHIDElement, IOHIDValue> GetValues(IOHIDElement[] elements)
        {
            ThrowIfDisposed();
            if (elements == null)
            {
                throw new ArgumentNullException("elements");
            }
            var elementArray = CFArray.FromNativeObjects(elements);

            IOHIDElement[] keys        = new IOHIDElement[elements.Length];
            IOHIDValue[]   values      = new IOHIDValue[elements.Length];
            CFDictionary   multiple    = CFDictionary.FromObjectsAndKeys(values, keys);
            var            multipleRef = multiple.Handle;
            var            result      = IOHIDDeviceCopyValueMultiple(Handle, elementArray.Handle, ref multipleRef);

            IOObject.ThrowIfError(result);
            var dict = new Dictionary <IOHIDElement, IOHIDValue> (multiple.Count);

            IntPtr[] keyRefs, valueRefs;
            multiple.GetKeysAndValues(out keyRefs, out valueRefs);
            for (int i = 0; i < multiple.Count; i++)
            {
                dict.Add(new IOHIDElement(keyRefs [i], true), new IOHIDValue(valueRefs [i], true));
            }
            CFType.Release(multiple.Handle);
            return(dict);
        }