public void RegisterDeviceNotification(Guid guid, WindowInteropHelper windowInteropHelper)
{
DEV_BROADCAST_DEVICEINTERFACE devIF = new DEV_BROADCAST_DEVICEINTERFACE();
IntPtr devIFBuffer;
//Set to HID GUID
devIF.dbcc_size = Marshal.SizeOf(devIF);
devIF.dbcc_devicetype = USBPnpDetection.DBT_DEVTYP_DEVICEINTERFACE;
devIF.dbcc_reserved = 0;
devIF.dbcc_classguid = guid;
//AloCATE A buffer for DLL call
devIFBuffer = Marshal.AllocHGlobal(devIF.dbcc_size);
//Copy devIF to buffer
Marshal.StructureToPtr(devIF, devIFBuffer, true);
//Register for HID device notification
m_hNotifyDevNode = USBPnpDetection.RegisterDeviceNotification(windowInteropHelper.Handle, devIFBuffer, USBPnpDetection.DEVICE_NOTIFY_WINDOW_HANDLE);
//Copy buffer to devIF
devIF = (DEV_BROADCAST_DEVICEINTERFACE)Marshal.PtrToStructure(devIFBuffer, typeof(DEV_BROADCAST_DEVICEINTERFACE));
//Free buffer
Marshal.FreeHGlobal(devIFBuffer);
}
public static USBPnpDetection GetInstance()
{
if (instance == null)
{
instance = new USBPnpDetection();
}
return(instance);
}
public void UnregisterNotification()
{
uint ret = USBPnpDetection.UnregisterDeviceNotification(m_hNotifyDevNode);
}
