Thread: horizontal scrollbar in listbox

Hello all
im trying to implement horizontal scrollbar in listbox windows
with out any success
this is how my create list box looks like :

Code:

  // Create a child listbox control.
        hWndList = CreateWindowEx(0,
                        "Listbox",
                        "",
                        WS_CHILD | WS_VISIBLE | WS_HSCROLL | WS_VSCROLL | LBS_NOINTEGRALHEIGHT,
                        0,
                        0,
                        CW_USEDEFAULT,
                        CW_USEDEFAULT,
                        hWndMain,
                        NULL,
                        hinstance,
                        NULL);

and it does create the scroll bar , but when i try to capture the event (WM_HSCROLL)
that looks like this :

Code:

 case WM_HSCROLL:
      {
         int nScrollCode = (int) LOWORD(wParam);  // scroll bar value
         int nPos = (short int) HIWORD(wParam);   // scroll box position
		  
         SetScrollPos(hWndList,
                      nScrollCode,
                      nPos,
                      true);
		  
		 
      }

but the scroll bar does not moving any where when i click or try to move it to the right .
what im missing here ?