Learn about a splitter control derived from CStatic for dialog controls and not only within a restricted splitter pane.
Latest Splitter Windows withing Dialogs Articles
This article explains about how to hide the splitter window and make it non-resizable.
The CSplitterWnd class of MFC does not draw panes while resizing. This class allows you to show a window's contents while you are resizing the splitter pane.
CSplitDialog for Dialog based Applications
CSplitterWnd-type class for Dialogs