/*
 * The following example retrieves the preferences of a section line and
 * then sets the global settings for section line preferences.
*/
#include <stdio.h>
#include <uf.h>
#include <uf_defs.h>
#include <uf_draw.h>
#include <uf_draw_types.h>
void ufusr(char *param, int *retcod, int param_len)
{
    int                         ifail = 0;
    char                        error_message[133];
    UF_DRAW_arrow_parms_t       arrow_parms;
    UF_DRAW_sxline_display_t    sxline_display;
    ifail = UF_initialize();
    if( !ifail )
    {
        /* Retrieve the global section line preferences. */
        ifail = UF_DRAW_ask_sxline_default_prfs( &arrow_parms,
            &sxline_display );
    }
    if( !ifail )
    {
        /* Change arrow_parm values. */
        arrow_parms.size = .2;
        arrow_parms.total_length = .4;
        arrow_parms.incl_angle = 30.0;
        arrow_parms.past_part_dist = 0.4;
        arrow_parms.stub_len = .3;
        arrow_parms.head_type = UF_DRAW_ansi_arrow;
        arrow_parms.head_control = UF_DRAW_open_arrowhead;
        /* Set the global preferences. */
        ifail = UF_DRAW_set_sxline_default_prfs( &arrow_parms,
            sxline_display );
    }
    printf( "UF_DRAW_set_sxline_default_prfs sample " );
    if( ifail )
    {
        ifail = UF_get_fail_message( ifail, error_message );
        printf( "fails.\nError is: %s\n", error_message );
    }
    else
        printf( "is successful.\n" );
    UF_terminate();
}