Hi, How do i know the width of the scroll bar

I`ve tried this :

Private Const SM_CXVSCROLL = 2
Private Const SM_CYHSCROLL = 3
rivate Declare Function GetSystemMetrics Lib "user32" (ByVal nIndex As Long) As Long

but GetSystemMetrics(SM_CXVSCROLL) and GetSystemMetrics(SM_CYHSCROLL)

returns 16 and 16 each.

Is not possible for the scrollbar to be 16 pix width