Button click help??

What do I need to add to this code to make a button click on the joystick do something? If anyone can help, this is the last thing I need to complete my program.

Thanks!

Imports System.ComponentModel
Imports System.Runtime.InteropServices

Public Class Joystick
Inherits NativeWindow

Private parent As Form
Private Const MM_JOY1MOVE As Integer = &H3A0

' Public Event Move(ByVal joystickPosition As Point)
Public Event Up()
Public Event Down()
Public Event Left()
Public Event Right()

<StructLayout(LayoutKind.Explicit)> _
Private Structure JoyPosition
<FieldOffset(0)> _
Public Raw As IntPtr
<FieldOffset(0)> _
Public XPos As UShort
<FieldOffset(2)> _
Public YPos As UShort
End Structure

Private Class NativeMethods

Private Sub New()
End Sub

' This is a "Stub" function - it has no code in its body.
' There is a similarly named function inside a dll that comes with windows called
' winmm.dll.
' The .Net framework will route calls to this function, through to the dll file.
<DllImport("winmm", CallingConvention:=CallingConvention.Winapi, EntryPoint:="joySetCapture", SetLastError:=True)> _
Public Shared Function JoySetCapture(ByVal hwnd As IntPtr, ByVal uJoyID As Integer, ByVal uPeriod As Integer, <MarshalAs(UnmanagedType.Bool)> ByVal changed As Boolean) As Integer
End Function

End Class

Public Sub New(ByVal parent As Form, ByVal joyId As Integer)
AddHandler parent.HandleCreated, AddressOf Me.OnHandleCreated
AddHandler parent.HandleDestroyed, AddressOf Me.OnHandleDestroyed
AssignHandle(parent.Handle)
Me.parent = parent
Dim result As Integer = NativeMethods.JoySetCapture(Me.Handle, joyId, 100, True)
End Sub

Private Sub OnHandleCreated(ByVal sender As Object, ByVal e As EventArgs)
AssignHandle(DirectCast(sender, Form).Handle)
End Sub

Private Sub OnHandleDestroyed(ByVal sender As Object, ByVal e As EventArgs)
ReleaseHandle()
End Sub


Protected Overrides Sub WndProc(ByRef m As System.Windows.Forms.Message)
If m.Msg = MM_JOY1MOVE Then
' Joystick co-ords.
' (0,0) (32768,0) (65535, 0)
'
'
'
' (0, 32768) (32768, 32768) (65535, 32768)
'
'
'
'
' (0, 65535) (32768, 65535) (65535, 65535)
'
Dim p As JoyPosition
p.Raw = m.LParam
' RaiseEvent Move(New Point(p.XPos, p.YPos))
If p.XPos > 16384 AndAlso p.XPos < 49152 Then
' X is near the centre line.
If p.YPos < 6000 Then
' Y is near the top.
RaiseEvent Up()
ElseIf p.YPos > 59536 Then
' Y is near the bottom.
RaiseEvent Down()
End If
Else
If p.YPos > 16384 AndAlso p.YPos < 49152 Then
' Y is near the centre line
If p.XPos < 6000 Then
' X is near the left.
RaiseEvent Left()
ElseIf p.XPos > 59536 Then
' X is near the right
RaiseEvent Right()
End If
End If
End If
End If

MyBase.WndProc(m)

End Sub


End Class