How to register Hot Keys in VB.net

Code sample: Register multiple hotkeys such as Alt+D, Alt+C, etc.

Imports System.Runtime.InteropServices

Public Class Form1

    Public Const MOD_ALT As Integer = &H1 'Alt key
    Public Const WM_HOTKEY As Integer = &H312

     _
    Public Shared Function RegisterHotKey(ByVal hwnd As IntPtr, _
                        ByVal id As Integer, ByVal fsModifiers As Integer, _
                        ByVal vk As Integer) As Integer
    End Function

     _
    Public Shared Function UnregisterHotKey(ByVal hwnd As IntPtr, _
                        ByVal id As Integer) As Integer
    End Function

    Private Sub Form1_Load(ByVal sender As System.Object, _
                        ByVal e As System.EventArgs) Handles MyBase.Load
        RegisterHotKey(Me.Handle, 100, MOD_ALT, Keys.D)
        RegisterHotKey(Me.Handle, 200, MOD_ALT, Keys.C)
    End Sub

    Protected Overrides Sub WndProc(ByRef m As System.Windows.Forms.Message)
        If m.Msg = WM_HOTKEY Then
            Dim id As IntPtr = m.WParam
            Select Case (id.ToString)
                Case "100"
                    MessageBox.Show("You pressed ALT+D key combination")
                Case "200"
                    MessageBox.Show("You pressed ALT+C key combination")
            End Select
        End If
        MyBase.WndProc(m)
    End Sub

    Private Sub Form1_FormClosing(ByVal sender As System.Object, _
                        ByVal e As System.Windows.Forms.FormClosingEventArgs) _
                        Handles MyBase.FormClosing
        UnregisterHotKey(Me.Handle, 100)
        UnregisterHotKey(Me.Handle, 200)
    End Sub

End Class