how to get mouse movement? e.g. (up, down, left, right)

Hi to everyone,

I need again your help, this is regarding in getting the movement of the MOUSE in the
window/screen if it goes up, down, left, right, i can do send message to the window to
move the scrollbar left, right, up and down such as like below, but this is for SCROLLBAR
what i need now is the movement of the MOUSE if i move it up it will say up state and down then down state.

Sample code for scrolling the scrollbar by sending message.

Code:
//for vertical scrollbar
SendMessage(hWnd, WM_VSCROLL, SB_LINEUP, SB_PAGEUP);
SendMessage(hWnd, WM_VSCROLL, SB_LINEDOWN, SB_PAGEDOWN);

//for horizontal scrollbar
SendMessage(hWnd, WM_HSCROLL, SB_LINERIGHT, 0);
SendMessage(hWnd, WM_HSCROLL, SB_LINELEFT, 0);
I am using VisualC++ Visual Studio 2010 as my IDE and application using Win32

I need immediate response please and will be appreciated.

Thank you!