Microchip HID_PnP_Demo, WinForm to WPF.

Hi anyone!

I'm trying to convert a Microchip example code from WinForm to WPF, the example is about an HID that automatically detects, identifies and makes a connection with it (Plug and Play) but I don't know how to solve the "does not contain a definition for 'handle'" error.

//Register for WM_DEVICECHANGE notifications.  This code uses these messages to detect plug and play connection/disconnection events for USB devices
DEV_BROADCAST_DEVICEINTERFACE DeviceBroadcastHeader = new DEV_BROADCAST_DEVICEINTERFACE();
DeviceBroadcastHeader.dbcc_devicetype = DBT_DEVTYP_DEVICEINTERFACE;
DeviceBroadcastHeader.dbcc_size = (uint)Marshal.SizeOf(DeviceBroadcastHeader);
DeviceBroadcastHeader.dbcc_reserved = 0;	//Reserved says not to use...
DeviceBroadcastHeader.dbcc_classguid = InterfaceClassGuid;

//Need to get the address of the DeviceBroadcastHeader to call RegisterDeviceNotification(), but
//can't use "&DeviceBroadcastHeader".  Instead, using a roundabout means to get the address by
//making a duplicate copy using Marshal.StructureToPtr().
IntPtr pDeviceBroadcastHeader = IntPtr.Zero;  //Make a pointer.
pDeviceBroadcastHeader = Marshal.AllocHGlobal(Marshal.SizeOf(DeviceBroadcastHeader)); //allocate memory for a new DEV_BROADCAST_DEVICEINTERFACE structure, and return the address
Marshal.StructureToPtr(DeviceBroadcastHeader, pDeviceBroadcastHeader, false);  //Copies the DeviceBroadcastHeader structure into the memory already allocated at DeviceBroadcastHeaderWithPointer
RegisterDeviceNotification(this.Handle, pDeviceBroadcastHeader, DEVICE_NOTIFY_WINDOW_HANDLE);

I left the original notes from the Microchip example. The Error happens in the last line.