NAME
    cgGetNextParameter - iterate through a program's or effect's parameters

SYNOPSIS
      #include <Cg/cg.h>

      CGparameter cgGetNextParameter( CGparameter current );

PARAMETERS
    current The current parameter.

RETURN VALUES
    Returns the next parameter in the program or effect's internal sequence
    of parameters.

    Returns NULL when current is the last parameter in the program or
    effect.

DESCRIPTION
    The parameters of a program or effect can be iterated over using
    cgGetNextParameter with the cgGetFirstParameter manpage, the
    cgGetNextStructParameter manpage, or the cgGetArrayParameter manpage.

    Similarly, the parameters in an effect can be iterated over starting
    with a call to the cgGetFirstEffectParameter manpage.

    Note that no specific order of traversal is defined by this mechanism.
    The only guarantee is that each parameter will be visited exactly once.

EXAMPLES
      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 ) );
      }

ERRORS
    CG_INVALID_PARAM_HANDLE_ERROR is generated if param is not a valid
    parameter.

HISTORY
    cgGetNextParameter was introduced in Cg 1.1.

SEE ALSO
    the cgFirstParameter manpage, the cgFirstEffectParameter manpage, the
    cgGetFirstStructParameter manpage, the cgGetArrayParameter manpage, the
    cgGetParameterType manpage

