private void RegisterNotification(Guid guid)
{
DeviceBroadcastStructures.DEV_BROADCAST_DEVICEINTERFACE devIF = new DeviceBroadcastStructures.DEV_BROADCAST_DEVICEINTERFACE();
IntPtr devIFBuffer;
// Set to HID GUID
devIF.dbcc_size = Marshal.SizeOf(devIF);
devIF.dbcc_devicetype = DeviceBroadcastStructures.DBT_DEVTYP_DEVICEINTERFACE;
devIF.dbcc_reserved = 0;
devIF.dbcc_classguid = guid;
// Allocate a buffer for DLL call
devIFBuffer = Marshal.AllocHGlobal(devIF.dbcc_size);
// Copy devIF to buffer
Marshal.StructureToPtr(devIF, devIFBuffer, true);
// Register for HID device notifications
m_hNotifyDevNode = DeviceBroadcastStructures.RegisterDeviceNotification((new WindowInteropHelper(_ParentWindow)).Handle, devIFBuffer, DeviceBroadcastStructures.DEVICE_NOTIFY_WINDOW_HANDLE);
// Copy buffer to devIF
Marshal.PtrToStructure(devIFBuffer, devIF);
// Free buffer
Marshal.FreeHGlobal(devIFBuffer);
}
// Unregister HID device notification
private void UnregisterNotification()
{
uint ret = DeviceBroadcastStructures.UnregisterDeviceNotification(m_hNotifyDevNode);
}
