Portable Device Detection - vb.net

Question

I need a functionality in my program (written in VB.NET) that detects whether the USB Portable Device (Windows CE 5.0) is inserted or removed. I have found a VB.NET code from the internet but it only works with USB Storage Devices... I only found codes and sample programs (written in C++) that does this USB Portable Device detection, but I can't understand the logic/program flow so I can't convert it to VB.NET
Here are the VB.NET codes that detects USB Storage Devices (lacks detection for USB Portable Devices):
Public Class Form1
Private WM_DEVICECHANGE As Integer = &H219
Public Enum WM_DEVICECHANGE_WPPARAMS As Integer
DBT_CONFIGCHANGECANCELED = &H19
DBT_CONFIGCHANGED = &H18
DBT_CUSTOMEVENT = &H8006
DBT_DEVICEARRIVAL = &H8000
DBT_DEVICEQUERYREMOVE = &H8001
DBT_DEVICEQUERYREMOVEFAILED = &H8002
DBT_DEVICEREMOVECOMPLETE = &H8004
DBT_DEVICEREMOVEPENDING = &H8003
DBT_DEVICETYPESPECIFIC = &H8005
DBT_DEVNODES_CHANGED = &H7
DBT_QUERYCHANGECONFIG = &H17
DBT_USERDEFINED = &HFFFF
End Enum
Protected Overrides Sub WndProc(ByRef m As System.Windows.Forms.Message)
If m.Msg = WM_DEVICECHANGE Then
Select Case m.WParam
Case WM_DEVICECHANGE_WPPARAMS.DBT_DEVICEARRIVAL
lblMessage.Text = "USB Inserted"
Case WM_DEVICECHANGE_WPPARAMS.DBT_DEVICEREMOVECOMPLETE
lblMessage.Text = "USB Removed"
End Select
End If
MyBase.WndProc(m)
End Sub
End Class
What must I add to this code so it could detect Windows USB Portable Devices as well?
I need the codes to be in VB.Net...
BTW, Using the program written in C++, it says that my USB Portable Device has the following Properties:
VID - 045E
PID - 00CE
Thanks for helping out! :)

Answer 1

Imports System.Runtime.InteropServices
Public Class Form1
'Used to detected if any of the messages are any of these constants values.
Private Const WM_DEVICECHANGE As Integer = &H219
Private Const DBT_DEVICEARRIVAL As Integer = &H8000
Private Const DBT_DEVICEREMOVECOMPLETE As Integer = &H8004
Private Const DBT_DEVTYP_VOLUME As Integer = &H2 '
'
'Get the information about the detected volume.
Private Structure DEV_BROADCAST_VOLUME
Dim Dbcv_Size As Integer
Dim Dbcv_Devicetype As Integer
Dim Dbcv_Reserved As Integer
Dim Dbcv_Unitmask As Integer
Dim Dbcv_Flags As Short
End Structure
Protected Overrides Sub WndProc(ByRef M As System.Windows.Forms.Message)
'
'These are the required subclassing codes for detecting device based removal and arrival.
'
If M.Msg = WM_DEVICECHANGE Then
Select Case M.WParam
'
'Check if a device was added.
Case DBT_DEVICEARRIVAL
Dim DevType As Integer = Runtime.InteropServices.Marshal.ReadInt32(M.LParam, 4)
If DevType = DBT_DEVTYP_VOLUME Then
Dim Vol As New DEV_BROADCAST_VOLUME
Vol = Runtime.InteropServices.Marshal.PtrToStructure(M.LParam, GetType(DEV_BROADCAST_VOLUME))
If Vol.Dbcv_Flags = 0 Then
For i As Integer = 0 To 20
If Math.Pow(2, i) = Vol.Dbcv_Unitmask Then
Dim Usb As String = Chr(65 + i) + ":\"
MsgBox("Looks like a USB device was plugged in!" & vbNewLine & vbNewLine & "The drive letter is: " & Usb.ToString)
Exit For
End If
Next
End If
End If
'
'Check if the message was for the removal of a device.
Case DBT_DEVICEREMOVECOMPLETE
Dim DevType As Integer = Runtime.InteropServices.Marshal.ReadInt32(M.LParam, 4)
If DevType = DBT_DEVTYP_VOLUME Then
Dim Vol As New DEV_BROADCAST_VOLUME
Vol = Runtime.InteropServices.Marshal.PtrToStructure(M.LParam, GetType(DEV_BROADCAST_VOLUME))
If Vol.Dbcv_Flags = 0 Then
For i As Integer = 0 To 20
If Math.Pow(2, i) = Vol.Dbcv_Unitmask Then
Dim Usb As String = Chr(65 + i) + ":\"
MsgBox("Looks like a volume device was removed!" & vbNewLine & vbNewLine & "The drive letter is: " & Usb.ToString)
Exit For
End If
Next
End If
End If
End Select
End If
MyBase.WndProc(M)
End Sub
End Class