void pinit_val3(
Pint ws_id, /* workstation identifier */ Pint val_dev, /* valuator device number */ Pfloat init_value, /* initial valuator value */ Pint pet, /* prompt and echo type */ const Plimit3 *echo_volume, /* echo volume */ const Pval_data3 *val_data_rec /* data record */
)
typedef struct {
Pfloat x_min; /* minimum x */
Pfloat x_max; /* maximum x */
Pfloat y_min; /* minimum y */
Pfloat y_max; /* maximum y */
Pfloat z_min; /* minimum z */
Pfloat z_max; /* maximum z */
} Plimit3;
typedef struct {
Pfloat low_value; /* low value of valuator range */
Pfloat high_value; /* high value of valuator range */
union Pval3_pets {
struct Pval3_pet_r1 {
char *string;
} pet_r1;
int impl_dep;
} pets;
} Pval_data3;
Devices 21 to 30 are available, each assigned to a different scale widget.
The following echo types are available:
1: Displays the valuator in the echo volume inside the graphic window.
Echo volume is given in DC coordinates
-1: Displays the valuator device in a separate window
Echo volume is given in percent of the RootWindow size.
The following fields of a Pval_data structure must be initialized:
Pval_data val_data_rec;
val_data_rec.low_value = minimum value.
val_data_rec.high_value = maximum value.
val_data_rec.pets.pet_r1.string = title of the scale widget.
Example:
/* Sample program to initialize a valuator device */
#include <phigs.h>
main()
{
Pint ws_id,val_dev,pet;
Pfloat def_val;
Plimit echo_area;
Pval_data val_data_rec;
/* Open PHIGS session */
popen_phigs(PDEF_ERR_FILE,PDEF_MEM_SIZE);
/* Open workstation */
ws_id = 1;
popen_ws(ws_id,"GPHIGS.OUT",8887);
/* Initialize valuator device 21 with echo type -1 */
val_data_rec.pets.pet_r1.string = "Parameter1";
val_data_rec.low_value = 0.;
val_data_rec.high_value = 100.;
def_val = 30.;
echo_area.x_min = 0.;
echo_area.y_min = .95;
echo_area.x_max = .3;
echo_area.y_max = 1.;
val_dev = 21;
pet = -1;
pinit_val(ws_id,val_dev,def_val,pet,&echo_area,
&val_data_rec);
/* Close workstation */
pclose_ws(ws_id);
/* Close PHIGS session */
pclose_phigs();
}