XmCreateInformationDialog — The MessageBox InformationDialog
convenience creation function

     #include <Xm/MessageB.h>
Widget XmCreateInformationDialog(
Widget parent,
String name,
ArgList arglist,
Cardinal argcount);

     XmCreateInformationDialog is a convenience creation
function that creates a DialogShell and an unmanaged
MessageBox child of the DialogShell.  An InformationDialog
gives the user information, such as the status of an action.
It includes a symbol, a message, and three buttons.  The
default symbol is i.  The default button labels are OK,
Cancel, and Help.

     Use XtManageChild to pop up the InformationDialog
(passing the MessageBox as the widget parameter); use
XtUnmanageChild to pop it down.

     XmCreateInformationDialog forces the value of the Shell
resource XmNallowShellResize to True.

parent    Specifies the parent widget ID

name      Specifies the name of the created widget

arglist   Specifies the argument list

argcount  Specifies the number of attribute/value pairs in
          the argument list (arglist)

     For a complete definition of MessageBox and its
associated resources, see XmMessageBox(3).

     Returns the MessageBox widget ID.