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<A NAME="PetscObjectComposeFunctionDynamic"><H1>PetscObjectComposeFunctionDynamic</H1></A>
Associates a function with a given PETSc object. Collective on <A HREF="../Sys/PetscObject.html#PetscObject">PetscObject</A>
<P>
<H3><FONT COLOR="#CC3333">Input Parameters</FONT></H3>
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<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>obj </B></TD><TD>- the PETSc object; this must be cast with a (<A HREF="../Sys/PetscObject.html#PetscObject">PetscObject</A>), for example,
<A HREF="../Sys/PetscObjectCompose.html#PetscObjectCompose">PetscObjectCompose</A>((<A HREF="../Sys/PetscObject.html#PetscObject">PetscObject</A>)mat,...);
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>name </B></TD><TD>- name associated with the child function
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>fname </B></TD><TD>- name of the function
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>ptr </B></TD><TD>- function pointer (or <A HREF="../Sys/PETSC_NULL.html#PETSC_NULL">PETSC_NULL</A> if using dynamic libraries)
</TD></TR></TABLE>
<P>
<P>
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
PetscErrorCode PetscObjectComposeFunctionDynamic(PetscObject obj,const char name[],const char fname[],void *ptr)
</PRE>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
To remove a registered routine, pass in a <A HREF="../Sys/PETSC_NULL.html#PETSC_NULL">PETSC_NULL</A> rname and fnc().
<P>
<A HREF="../Sys/PetscObjectComposeFunctionDynamic.html#PetscObjectComposeFunctionDynamic">PetscObjectComposeFunctionDynamic</A>() can be used with any PETSc object (such as
<A HREF="../Mat/Mat.html#Mat">Mat</A>, <A HREF="../Vec/Vec.html#Vec">Vec</A>, <A HREF="../KSP/KSP.html#KSP">KSP</A>, <A HREF="../SNES/SNES.html#SNES">SNES</A>, etc.) or any user-provided object.
<P>
The composed function must be wrapped in a EXTERN_C_BEGIN/END for this to
work in C++/complex with dynamic link libraries (config/configure.py options --with-shared --with-dynamic)
enabled.
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../Sys/PetscObjectQueryFunction.html#PetscObjectQueryFunction">PetscObjectQueryFunction</A>()
<BR><P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>advanced
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../include/petsc.h.html#PetscObjectComposeFunctionDynamic">include/petsc.h</A>
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