must be prepared to handle the message in the <CODE>
RSCI_message</CODE>
 field. This message should take a RulerShowControlAttributes structure and set the ruler views usable or not usable accordingly. See <A HREF="#Ruler_5.htm_58469"> Sample Handler for use with RulerShowControl</A>
 for an example.</P>
<P CLASS="figTitle">
Code Display 19-3 RulerShowControl Instance Data and Features</P>
<PRE>typedef WordFlags <A NAME="Ruler_5.htm_IX_RSCCFeatures"> </A>RSCCFeatures;
#define <A NAME="Ruler_5.htm_IX_RSCCF_