XmMainWindowSetAreas — A MainWindow function that
    identifies manageable children for each area
#include <Xm/MainW.h>
void XmMainWindowSetAreas(
Widget widget,
Widget menu_bar,
Widget command_window,
Widget horizontal_scrollbar,
Widget vertical_scrollbar,
Widget work_region);
XmMainWindowSetAreas identifies which of the valid children
    for each area (such as the MenuBar and work region) are to be actively
    managed by MainWindow. This function also sets up or adds the MenuBar, work
    window, command window, and ScrollBar widgets to the application's main
    window widget.
Each area is optional; therefore, the user can pass NULL to one or
    more of the following arguments. The window manager provides the title
  bar.
NOTE: XmMainWindowSetAreas is obsolete and exists
    for compatibility with previous releases. The information previously
    returned by this function can now be obtained through a call to
    XtGetValues on the XmNscrolledWindowChildType resource.
  - widget
- Specifies the MainWindow widget ID.
- Specifies the widget ID for the MenuBar to be associated with the
      MainWindow widget. Set this ID only after creating an instance of the
      MainWindow widget. The attribute name associated with this argument is
      XmNmenuBar.
- command_window
- Specifies the widget ID for the command window to be associated with the
      MainWindow widget. Set this ID only after creating an instance of the
      MainWindow widget. The attribute name associated with this argument is
      XmNcommandWindow.
- horizontal_scrollbar
- Specifies the ScrollBar widget ID for the horizontal ScrollBar to be
      associated with the MainWindow widget. Set this ID only after creating an
      instance of the MainWindow widget. The attribute name associated with this
      argument is XmNhorizontalScrollBar.
- vertical_scrollbar
- Specifies the ScrollBar widget ID for the vertical ScrollBar to be
      associated with the MainWindow widget. Set this ID only after creating an
      instance of the MainWindow widget. The attribute name associated with this
      argument is XmNverticalScrollBar.
- work_region
- Specifies the widget ID for the work window to be associated with the
      MainWindow widget. Set this ID only after creating an instance of the
      MainWindow widget. The attribute name associated with this argument is
      XmNworkWindow.
For a complete definition of MainWindow and its associated
    resources, see XmMainWindow(3).