Programming Windows®, Fifth Edition

The Scroll Bar Class

When the subject of scroll bars first came up in Chapter 4, I discussed some of the differences between “window scroll bars” and “scroll bar controls.” The SYSMETS programs use window scroll bars, which appear at the right and bottom of the window. You add window scroll bars to a window by including the identifier WS_VSCROLL or WS_HSCROLL or both in the window style when creating the window. Now we’re ready to make some scroll bar controls, which are child windows that can appear anywhere in the client area of the parent window. You create child window scroll bar controls by using the predefined window class “scrollbar” and one of the two scroll bar styles SBS_VERT and SBS_HORZ.

Unlike the button controls (and the edit and ...