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<TITLE>IBM Visualization Data Explorer Programmer's Reference</TITLE>
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<H1>IBM Visualization Data Explorer Programmer's Reference</H1>
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<H3><A NAME="HDRDXSP" HREF="progu097.htm#PToC_414">DXSetPart</A></H3>
<A NAME="IDX2093"></A>
<A NAME="IDX2094"></A>
<P><STRONG>Function</STRONG>
<P>
Adds a Field to an Object.
<P><STRONG>Syntax</STRONG>
<BR>
<TT><STRONG><BR>
#include <dx/dx.h><BR>
<P><BR>
Object DXSetPart(Object o, int n, Field field)<BR>
</STRONG></TT><BR>
<P><STRONG>Functional Details</STRONG>
<P>
Performs a depth-first traversal of the Object
<TT><STRONG>c</STRONG></TT>,
and replaces the
<TT><STRONG>n</STRONG></TT>th occurrence of a subObject with class
<TT><STRONG>CLASS_FIELD</STRONG></TT> with the Field
<TT><STRONG>field</STRONG></TT>
given. If the root of the Object given is not one of
<TT><STRONG>CLASS_GROUP</STRONG></TT>,
<TT><STRONG>CLASS_XFORM</STRONG></TT>,
<TT><STRONG>CLASS_CLIP</STRONG></TT>,
or
<TT><STRONG>CLASS_SCREEN</STRONG></TT>, this function has no effect.
<P>
For applying a function to every Field in a Group,
<TT><STRONG>DXProcessParts</STRONG></TT> is a more efficient interface.
<P>
The parts of a Group may be indexed by calling
<TT><STRONG>DXSetPart</STRONG></TT> with successive values of
<TT><STRONG>n</STRONG></TT>,
starting
at 0 until
<TT><STRONG>NULL</STRONG></TT> is returned, provided the replacement part
contains the same number of subObjects of
<TT><STRONG>CLASS_FIELD</STRONG></TT>. This is because the replacement part
will be traversed (and counted) in subsequent calls to
<TT><STRONG>DXSetPart</STRONG></TT>.
<P><STRONG>Return Value</STRONG>
<P>
Returns <TT><STRONG>o</STRONG></TT> or returns <TT><STRONG>NULL</STRONG></TT>
and
sets an error code.
<P><STRONG>See Also</STRONG>
<P>
<TT><STRONG>
<A HREF="progu191.htm#HDRDXGP">DXGetPart</A>,
<A HREF="progu192.htm#HDRDXGPC">DXGetPartClass</A>,
<A HREF="progu271.htm#HDRDXPP">DXProcessParts</A>
</STRONG></TT>
<P>
<A HREF="progu045.htm#HDRPRTS">"Parts"</A>.
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