
#define <A NAME="Ruler_3.htm_IX_RTC_DEFAULT_TOOLBOX_FEATURES"> </A>RTC_DEFAULT_TOOLBOX_FEATURES (RTCF_INCHES | RTCF_CENTIMETERS)</PRE>
<P>
The RulerTypeControl uses a notification block with the following structure:</P>
<PRE>typedef struct RulerTypeNotificationBlock {
	VisRulerType <A NAME="Ruler_3.htm_IX_RTNB_type"> </A>RTNB_type;
} <A NAME="Ruler_3.htm_IX_RulerTypeNotificationBlock"> </A>RulerTypeNotificationBlock;</PRE>
<P>
The ruler must keep track of the main view's scale; if the main view has doubled