The following window styles are used with header controls.
| HDS_BUTTONS | Header items behave like buttons. |
| HDS_HIDDEN | Indicates a header control that is intended to be hidden. This style does not hide the control; instead, it causes the header control to return zero in the cy member of the WINDOWPOS structure returned by an HDM_LAYOUT message. You would then hide the control by setting its height to zero. |
| HDS_HORZ | The header control is horizontal. |