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UF_DRF_set_customer_ *** f_file函数实例代码演示：
这是UF_DRF_init_symbol_create_data是如何使用的例子与其他符号数据的功能。
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#include <string.h>
#include <uf.h>
#include <uf_defs.h>
#include <uf_view.h>
#include <uf_drf.h>
#include <uf_obj.h>
#include <uf_curve.h>
#include <uf_csys.h>
void ufusr (char *param, int *retcod, int param_len)
{
int volatile status = 0;
int num_symbol_fonts = 2;
logical is_inverted = TRUE;
logical is_mirrored = TRUE;
double symbol_factor = 0.0;
double symbol_anchor[3] = {-1.5, 0.0, 0.0};
double symbol_orient[3] = { 1.5, 0.0, 0.0};
double symbol_angle = 30.0;
double symbol_length = 2.0;
double symbol_height = 1.0;
double point1[3];
tag_t point1_tag, point2_tag, point3_tag;
tag_t line1_tag, line2_tag;
tag_t symbol_tag, symbol_font_tags[9];
tag_t dimension_tag;
char dimtxt[15 + 1] = "DIMENSION TEXT ";
char symbol_file_name[SYMBOL_FILE_NAME_SIZE + 1];
char symbol_name[SYMBOL_NAME_SIZE + 1] = "SYMBOLx ";
UF_CURVE_line_t line_coords;
UF_DRF_symbol_create_data_t symbol_data;
UF_DRF_symbol_data_t symbol_info;
UF_DRF_object_t object1, object2;
UF_DRF_text_t drf_text;
status = UF_initialize ();
if (!status)
{
/* create some points and lines */
point1[0] = 2.0;
point1[1] = 11.0;
point1[2] = 0.0;
UF_CURVE_create_point (point1, &point1_tag);
point1[0] = 3.0;
point1[1] = 0.5;
UF_CURVE_create_point (point1, &point2_tag);
point1[0] = -0.7;
point1[1] = 2.5;
UF_CURVE_create_point (point1, &point3_tag);
line_coords.start_point[0] = -1.0;
line_coords.start_point[1] = -1.0;
line_coords.start_point[2] = 0.0;
line_coords.end_point[0] = 1.0;
line_coords.end_point[1] = 1.0;
line_coords.end_point[2] = 0.0;
UF_CURVE_create_line (&line_coords, &line1_tag);
line_coords.start_point[0] = 1.0;
line_coords.start_point[1] = -1.0;
line_coords.start_point[2] = 0.0;
line_coords.end_point[0] = -1.0;
line_coords.end_point[1] = 1.0;
line_coords.end_point[2] = 0.0;
UF_CURVE_create_line (&line_coords, &line2_tag);
UF_DRF_init_symbol_create_data (&symbol_data);
/* initialize the object structures */
UF_DRF_init_object_structure (&object1);
UF_DRF_init_object_structure (&object2);
/* load drf_text specification */
drf_text.user_dim_text = dimtxt;
drf_text.lines_app_text = 0;
drf_text.appended_text = NULL;
/* create a parallel dimension */
point1[0] = 5.0;
point1[1] = 3.0;
object1.object_tag = line1_tag;
object1.object_view_tag = NULL_TAG;
object1.object_assoc_type = UF_DRF_end_point;
object1.object_assoc_modifier = UF_DRF_last_end_point;
object2.object_tag = point1_tag;
object2.object_view_tag = NULL_TAG;
object2.object_assoc_type = UF_DRF_end_point;
object2.object_assoc_modifier = UF_DRF_first_end_point;
UF_DRF_create_parallel_dim
(&object1, &object2, &drf_text, point1,
&dimension_tag);
UF_DRF_set_customer_ *** f_file ();
UF_DRF_ask_ *** f_file (symbol_file_name);
/* create symbol font entity */
symbol_font_tags[0] = line1_tag;
symbol_font_tags[1] = line2_tag;
UF_DRF_create_symbol_font
(symbol_name, symbol_factor, symbol_anchor,
symbol_orient,
num_symbol_fonts, symbol_font_tags);
/* create standalone symbol */
strcpy (symbol_data.symbol_name, symbol_name);
symbol_data.angle = symbol_angle;
symbol_data.length = symbol_length;
symbol_data.height = symbol_height;
symbol_data.anchor_tag = point1_tag;
UF_DRF_place_symbol
(&symbol_data, is_inverted, is_mirrored, &symbol_tag);
symbol_data.length *= 0.15;
symbol_data.height *= 0.15;
symbol_data.anchor_tag = point2_tag;
UF_DRF_add_symbol_to_object
(&symbol_data, dimension_tag);
symbol_data.anchor_tag = point3_tag;
UF_DRF_add_symbol_to_object
(&symbol_data, dimension_tag);
UF_DRF_ask_symbols_used
(dimension_tag, &num_symbol_fonts, symbol_font_tags);
status = UF_DRF_ask_symbol_data (symbol_tag, &symbol_info);
if (status == UF_DRF_NO_ERRORS)
{
symbol_font_tags[0] = symbol_info.symbol_font_tag;
/* absolute anchor point coordinates */
symbol_anchor[0] = symbol_info.anchor_point[0];
symbol_anchor[1] = symbol_info.anchor_point[1];
symbol_anchor[2] = symbol_info.anchor_point[2];
/* absolute orientation point coordinates */
symbol_orient[0] = symbol_info.orient_point[0];
symbol_orient[1] = symbol_info.orient_point[1];
symbol_orient[2] = symbol_info.orient_point[2];
/* angle, length, height */
symbol_angle = symbol_info.angle;
symbol_length = symbol_info.length;
symbol_height = symbol_info.height;
}
}
UF_terminate ();
}

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