name - name with which to reference rootwindow object
display - the X Display structure; if NULL, use the
default display
screen - the X Screen structure; if NULL, use the
default screen
OUTPUT
none
RETURN VALUE
The rootwindow object on success, NULL on failure
DESCRIPTION
Creates a rootwindow object. This is a toplevel object
similar to a shell object, which serve as a toplevel for
an application; the toplevel serves as a mediating device
between the application and the window manager. This call
allows the application to have several independant windows,
which is the case with xvroutines having multiple subforms.
The routine also supports the creation of toplevels on
potentially different screens, which applies when a Khoros
application distributes its user interface with the concert
program. Both the display and screen are optional arguments;
if either of these are set to NULL, then the default display
and default screen will be used.