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49 lines
1.3 KiB
49 lines
1.3 KiB
using System;
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using System.Threading;
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namespace HidLibrary
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{
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internal class HidDeviceEventMonitor
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{
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public event InsertedEventHandler Inserted;
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public event RemovedEventHandler Removed;
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public delegate void InsertedEventHandler();
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public delegate void RemovedEventHandler();
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private readonly HidDevice _device;
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private bool _wasConnected;
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public HidDeviceEventMonitor(HidDevice device)
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{
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_device = device;
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}
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public void Init()
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{
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var eventMonitor = new Action(DeviceEventMonitor);
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eventMonitor.BeginInvoke(DisposeDeviceEventMonitor, eventMonitor);
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}
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private void DeviceEventMonitor()
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{
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var isConnected = _device.IsConnected;
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if (isConnected != _wasConnected)
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{
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if (isConnected && Inserted != null) Inserted();
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else if (!isConnected && Removed != null) Removed();
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_wasConnected = isConnected;
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}
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Thread.Sleep(500);
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if (_device.MonitorDeviceEvents) Init();
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}
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private static void DisposeDeviceEventMonitor(IAsyncResult ar)
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{
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((Action)ar.AsyncState).EndInvoke(ar);
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}
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}
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}
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