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 ?

I believe you need to send the LB_SETHORIZONTALEXTENT message to the list box.

And how ?

Google is your friend. Do some research yourself.

Originally Posted by umen242

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 ?

use this

HWND h_ListBox;

h_ListBox = CreateWindow(
_T("LISTBOX"),
_T(""),
(WS_HSCROLL | WS_VSCROLL | WS_CHILD | WS_VISIBLE | WS_TABSTOP),
10,10,270,160,
hWnd,
(HMENU)8004,
GetModuleHandle(NULL),
NULL
);

int SizeOfHBListBox = 1024;
SendDlgItemMessage(hWnd,8004,(UINT) LB_SETHORIZONTALEXTENT,(WPARAM)SizeOfHBListBox,(LP ARAM)0);