private void Init(Window window)
{
// Adds the windows message processing hook and registers USB device add/removal notification.
HwndSource source = HwndSource.FromHwnd(new WindowInteropHelper(window).Handle);
if (source != null)
{
var windowHandle = source.Handle;
source.AddHook(HwndHandler);
DeviceNotification.RegisterDeviceNotification(windowHandle);
}
}
/// <summary>
/// Method that receives window messages.
/// </summary>
private IntPtr HwndHandler(IntPtr hwnd, int msg, IntPtr wparam, IntPtr lparam, ref bool handled)
{
if (msg == DeviceNotification.c_WmDevicechange)
{
DeviceNotification.DbtEventType eventType = (DeviceNotification.DbtEventType)wparam;
DeviceData device = DeviceNotification.GetDevice(lparam);
if (!m_FilterByType || device.DeviceType == m_DeviceType)
{
if (eventType == DeviceNotification.DbtEventType.Arrival)
{
OnDeviceArrival(device);
}
else if (eventType == DeviceNotification.DbtEventType.RemoveComplete)
{
OnDeviceRemoval(device);
}
}
}
handled = false;
return(IntPtr.Zero);
}
private void Close()
{
DeviceNotification.UnregisterDeviceNotification();
}