.TH "KDK_EDID_GET_GAMMA" 3 "Fri Aug 25 2023" "Linux Programmer's Manual" \"
.SH NAME
kdk_edid_get_gamma - 获取显示器的伽马值
.SH SYNOPSIS
.nf
.B #include <libkyedid.h>
.sp
.BI "extern float kdk_edid_get_gamma(char *"name ");"
.sp
Link with \fI\-lkyedid\fP.
.SH "Detailed Description"
The main function of the interface is to obtain the gamma value of the screen.
.PP
The argument
.I name
is the current interface of the screen.
.SH "RETURN VALUE"
On success, returns the screen gamma value of type float.
.PP
On error, return
.BR 0.00.
.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These functions are as per the withdrawn POSIX.1e draft specification.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_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_primary (),
.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_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_primary (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).