Scrollbar Control Problem

I am trying to make a program that has 3 scrollbars. (Red, Green, and Blue)

The scrollbars show up but I cannot move the thumb. Here is the code for one of the scrollbars.

Code:

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/*  Create Controls for Red  */
            uiRedLabel  = CreateWindowEx(0, "STATIC", "Red:", WS_CHILD | WS_VISIBLE,
                                        15, 20, 400, 20, hwnd, (HMENU)IDC_RED_LABEL,
                                        GetModuleHandle(NULL), NULL);

            uiRedScroll = CreateWindowEx(0, "SCROLLBAR", NULL, WS_CHILD | SBS_HORZ | WS_VISIBLE,
                                        65, 20, 250, 18, hwnd, (HMENU)IDC_RED_SCROLL,
                                        GetModuleHandle(NULL), NULL);

            uiRedEdit  = CreateWindowEx(0, "EDIT", NULL, WS_CHILD | WS_VISIBLE | WS_BORDER,
                                        330, 20, 30, 18, hwnd, (HMENU)IDC_RED_EDIT,
                                        GetModuleHandle(NULL), NULL);

            redScrollInfo.cbSize = sizeof(SCROLLINFO);
            redScrollInfo.nMin  = 0;
            redScrollInfo.nMax  = 255;
            redScrollInfo.nPos  = 255;
            redScrollInfo.fMask  = SIF_POS | SIF_RANGE;

            SetScrollInfo(uiRedScroll, SB_CTL, &redScrollInfo, FALSE);

            SendDlgItemMessage(hwnd, IDC_RED_LABEL, WM_SETFONT,
                              (WPARAM)GetStockObject(DEFAULT_GUI_FONT), MAKELPARAM(TRUE, 0));

            SendDlgItemMessage(hwnd, IDC_RED_EDIT, WM_SETFONT,
                              (WPARAM)GetStockObject(DEFAULT_GUI_FONT), MAKELPARAM(TRUE, 0));

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If you are wondering what the edit box is for.. I was trying to have an UpDown box to be in sync with the scrollbar but it seems that those are outdated.(?)