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<BLOCKQUOTE>
<H1><A NAME="NAME"><A NAME="1">NAME
</A></A></H1>
<P>
<B>cgGetNextParameter</B> - iterate through a program's or effect's parameters
</P>
<H1><A NAME="SYNOPSIS"><A NAME="2">SYNOPSIS
</A></A></H1>
<PRE> #include <Cg/cg.h>
CGparameter cgGetNextParameter( CGparameter current );
</PRE>
<H1><A NAME="PARAMETERS"><A NAME="3">PARAMETERS
</A></A></H1>
<DL>
<DT><STRONG>current
</STRONG></DT>
<DD>
<P>
The current parameter.
</P>
</DD></DL>
<H1><A NAME="RETURN_VALUES"><A NAME="4">RETURN VALUES
</A></A></H1>
<P>
Returns the next parameter in the program or effect's internal sequence of parameters.
</P>
<P>
Returns <B>NULL</B> when <B>current</B> is the last parameter in the program or effect.
</P>
<H1><A NAME="DESCRIPTION"><A NAME="5">DESCRIPTION
</A></A></H1>
<P>
The parameters of a program or effect can be iterated over using
<B>cgGetNextParameter</B> with <A HREF="cgGetFirstParameter.html">cgGetFirstParameter</A>, or <A HREF="cgGetArrayParameter.html">cgGetArrayParameter</A>.
</P>
<P>
Similarly, the parameters in an effect can be iterated over starting
with a call to <A HREF="cgGetFirstEffectParameter.html">cgGetFirstEffectParameter</A>.
</P>
<P>
Note that no specific order of traversal is defined by
this mechanism. The only guarantee is that each parameter
will be visited exactly once.
</P>
<H1><A NAME="EXAMPLES"><A NAME="6">EXAMPLES
</A></A></H1>
<PRE> void RecurseParams( CGparameter param )
{
if(!param)
return;
do
{
switch(cgGetParameterType(param))
{
case CG_STRUCT :
RecurseParams(cgGetFirstStructParameter(param));
break;
case CG_ARRAY :
{
int ArraySize = cgGetArraySize(param, 0);
int i;
for(i=0; i < ArraySize; ++i)
RecurseParams(cgGetArrayParameter(param, i));
}
break;
default :
/* Do stuff to param */
}
} while((param = cgGetNextParameter(param)) != 0);
}
void RecurseParamsInProgram( CGprogram program )
{
RecurseParams( cgGetFirstParameter( program ) );
}
</PRE>
<H1><A NAME="ERRORS"><A NAME="7">ERRORS
</A></A></H1>
<P>
<B>CG_INVALID_PARAM_HANDLE_ERROR</B> is generated if <B>param</B> is not a valid parameter.
</P>
<H1><A NAME="HISTORY"><A NAME="8">HISTORY
</A></A></H1>
<P>
<B>cgGetNextParameter</B> was introduced in Cg 1.1.
</P>
<H1><A NAME="SEE_ALSO"><A NAME="9">SEE ALSO
</A></A></H1>
<P>
<A HREF="cgGetFirstParameter.html">cgGetFirstParameter</A>,
<A HREF="cgGetFirstEffectParameter.html">cgGetFirstEffectParameter</A>,
<A HREF="cgGetFirstStructParameter.html">cgGetFirstStructParameter</A>,
<A HREF="cgGetArrayParameter.html">cgGetArrayParameter</A>,
<A HREF="cgGetParameterType.html">cgGetParameterType</A>
</P>
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