window parameter is null.
</PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
All of these interfaces are provided as macros and functions. The
macros are suppressed (and only the functions provided) when
window parameter is null.
</PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
All of these interfaces are provided as macros and functions. The
macros are suppressed (and only the functions provided) when