.TH "KDK_EDID_GET_PRIMARY" 3 "Fri Aug 25 2023" "Linux Programmer's Manual" \"
.SH NAME
kdk_edid_get_primary - 获取是否是主显示器（是/否）
.SH SYNOPSIS
.nf
.B #include <libkyedid.h>
.sp
.BI "extern int kdk_edid_get_primary(char *"name ");"
.sp
Link with \fI\-lkyedid\fP.
.SH "Detailed Description"
The main function of the interface is to determine whether it is the main screen.
.PP
The argument
.I name
is the current interface of the screen.
.SH "RETURN VALUE"
On success, returns 1, which is the primary screen; Returns 0, not the primary screen.
On error, return
.BR -1.
.SH EXAMPLES
.EX
#include "libkyedid.h"
#include <stdio.h>
#include <stdlib.h>

int main()
{
    char** name = kdk_edid_get_interface();
    size_t count = 0;
    while (name[count])
    {
        printf("当前接口 = %s\n", name[count]);
        float gamma = kdk_edid_get_gamma(name[count]);
        printf("gamma = %0.2f\n", gamma);
        float size = kdk_edid_get_size(name[count]);
        printf("size = %0.1f\n", size);
        char *max_resolution = kdk_edid_get_max_resolution(name[count]);
        printf("max_resolution = %s\n", max_resolution);
        free(max_resolution);
        char *model = kdk_edid_get_model(name[count]);
        printf("model = %s\n", model);
        free(model);
        char *area = kdk_edid_get_visible_area(name[count]);
        printf("area = %s\n", area);
        free(area);
        char *manufacturer = kdk_edid_get_manufacturer(name[count]);
        printf("manufacturer = %s\n", manufacturer);
        free(manufacturer);
        int week = kdk_edid_get_week(name[count]);
        printf("week = %d\n", week);
        int year = kdk_edid_get_year(name[count]);
        printf("year = %d\n", year);
        int primary = kdk_edid_get_primary(name[count]);
        printf("%s\n", primary == 1 ? "是" : "否");

        char *resolution = kdk_edid_get_resolution(name[count]);
        printf("resolution = %s\n", resolution);
        free(resolution);

        char *ratio = kdk_edid_get_ratio(name[count]);
        printf("ratio = %s\n", ratio);
        free(ratio);

        char *character = kdk_edid_get_character(name[count]);
        printf("character = %s\n", character);
        free(character);

        printf("---------------------------------------\n");
        count ++;
    }
    kdk_edid_freeall(name);
    return 0;
}

.SH "CONFORMING TO"
These functions are as per the withdrawn POSIX.1e draft specification.
The following functions are Linux extensions:
.BR kdk_edid_get_interface (),
.BR kdk_edid_get_gamma (),
.BR kdk_edid_get_size (),
.BR kdk_edid_get_max_resolution (),
.BR kdk_edid_get_model (),
.BR kdk_edid_get_visible_area (),
.BR kdk_edid_get_manufacturer (),
.BR kdk_edid_get_week (),
.BR kdk_edid_get_year (),
.BR kdk_edid_get_resolution (),
.BR kdk_edid_get_ratio (),
.BR kdk_edid_get_character ()
and
.BR kdk_edid_freeall ().
.SH "SEE ALSO"
.BR kdk_edid_get_interface (3),
.BR kdk_edid_get_gamma (3),
.BR kdk_edid_get_size (3),
.BR kdk_edid_get_max_resolution (3),
.BR kdk_edid_get_model (3),
.BR kdk_edid_get_visible_area (3),
.BR kdk_edid_get_manufacturer (3),
.BR kdk_edid_get_week (3),
.BR kdk_edid_get_year (3),
.BR kdk_edid_get_resolution (3),
.BR kdk_edid_get_ratio (3),
.BR kdk_edid_get_character (3)
and
.BR kdk_edid_freeall (3).