Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal _    hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, _    lParam As Any) As LongPrivate Declare Function GetClientRect Lib "user32" (ByVal hwnd As Long, _    lpRect As RECT) As LongConst LB_GETITEMHEIGHT = &H1A1Type RECT    Left As Long    Top As Long    Right As Long    Bottom As LongEnd Type' Return the number of visible items in a ListBox controlFunction ListBoxVisibleItems(lb As ListBox) As Long    Dim lpRect As RECT, itemHeight As Long    ' Get client rectangle area    GetClientRect lb.hwnd, lpRect    ' Get height of each item    itemHeight = SendMessage(lb.hwnd, LB_GETITEMHEIGHT, 0, ByVal 0&)    ' Do the division    ListBoxVisibleItems = (lpRect.Bottom - lpRect.Top)  itemHeightEnd Function