hrough the reference point (the point stored in <CODE>
VRI_reference</CODE>
).</P>


<H6 CLASS="RefETitle">
<A NAME="Ruler_9.htm_IX_MSG_VIS_RULER_SET_CONSTRAIN_TRANSFORM">
 </A>
MSG_VIS_RULER_SET_CONSTRAIN_TRANSFORM</H6>
<PRE CLASS="syntax">void MSG_VIS_RULER_SET_CONSTRAIN_TRANSFORM(
        TransMatrix* tm)</PRE>
<P>
Use this message to impose a transformation on the coordinate system used to constrain the mouse. You can see this at work in GeoDraw when resizing an object which has been rotated or skewed.<