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 DeviceInfo_t GetHIDDeviceInfo(DEV_BROADCAST_DEVICEINTERFACE dvi)
{
DeviceInfo_t deviceInfo = new DeviceInfo_t();
string dbcc_name = new string(dvi.dbcc_name);
dbcc_name = RemoveNullTerminatedFromString(dbcc_name);
string[] parts = dbcc_name.Split('#');
if (parts.Length >= 3)
{
deviceInfo.DevType = parts[0].Substring(parts[0].IndexOf(@"?") + 2);
deviceInfo.DeviceInstanceId = parts[1];
deviceInfo.DeviceUniqueID = parts[2];
}
return(deviceInfo);
}
