C# Constants:

const int HC_ACTION = 0;
const int WH_MOUSE_LL = 14;
const uint WM_MOUSEMOVE = 0x200;
const uint WM_LBUTTONDOWN = 0x201;
const uint WM_LBUTTONUP = 0x202;
const uint WM_LBUTTONDBLCLK = 0x203;
const uint WM_RBUTTONDOWN = 0x204;
const uint WM_RBUTTONUP = 0x205;
const uint WM_RBUTTONDBLCLK = 0x206;
const uint WM_MBUTTONDOWN = 0x207;
const uint WM_MBUTTONUP = 0x208;
const uint WM_MBUTTONDBLCLK = 0x209;
const uint WM_MOUSEWHEEL = 0x20A;
const uint WM_MOUSEHWHEEL = 0x20E;

VB Constants:

Private Const HC_ACTION As Integer = 0
Private Const WH_MOUSE_LL As Integer = 14
Private Const WM_MOUSEMOVE As Integer = &H200
Private Const WM_LBUTTONDOWN As Integer = &H201
Private Const WM_LBUTTONUP As Integer = &H202
Private Const WM_LBUTTONDBLCLK As Integer = &H203
Private Const WM_RBUTTONDOWN As Integer = &H204
Private Const WM_RBUTTONUP As Integer = &H205
Private Const WM_RBUTTONDBLCLK As Integer = &H206
Private Const WM_MBUTTONDOWN As Integer = &H207
Private Const WM_MBUTTONUP As Integer = &H208
Private Const WM_MBUTTONDBLCLK As Integer = &H209
Private Const WM_MOUSEWHEEL As Integer = &H20A
Private Const WM_MOUSEHWHEEL As Integer = &H20E

Notes:

Added by Senthamil