c语言写滑动电子相册在触摸屏上代码

以下是一个简单的C语言代码示例，用于在触摸屏上创建滑动电子相册：

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <linux/input.h>
#include <pthread.h>
#include <gtk/gtk.h>

#define MAX_IMAGE_COUNT 10

int fd;
pthread_t tid;
char *image_files[MAX_IMAGE_COUNT];
int current_image_index = 0;

void load_image_files() {
    int count = 0;
    DIR *dir;
    struct dirent *ent;
    if ((dir = opendir ("photos")) != NULL) {
        while ((ent = readdir (dir)) != NULL) {
            if (count >= MAX_IMAGE_COUNT) break;
            if (strstr(ent->d_name, ".jpg") || strstr(ent->d_name, ".png")) {
                char *filename = malloc(strlen(ent->d_name) + 1);
                strcpy(filename, ent->d_name);
                image_files[count++] = filename;
            }
        }
        closedir (dir);
    }
}

void *input_thread(void *arg) {
    struct input_event ev;
    while (1) {
        read(fd, &ev, sizeof(struct input_event));
        if (ev.type == EV_KEY && ev.code == BTN_TOUCH && ev.value == 1) {
            current_image_index++;
            if (current_image_index >= MAX_IMAGE_COUNT) {
                current_image_index = 0;
            }
            gtk_main_iteration_do(FALSE);
        }
    }
}

void show_current_image() {
    GtkWidget *image = gtk_image_new_from_file(image_files[current_image_index]);
    gtk_widget_show(image);
}

int main(int argc, char *argv[]) {
    load_image_files();

    GtkWidget *window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
    gtk_window_set_title(GTK_WINDOW(window), "Photo Album");
    gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);
    gtk_container_set_border_width(GTK_CONTAINER(window), 10);

    GtkWidget *image = gtk_image_new();
    gtk_container_add(GTK_CONTAINER(window), image);
    show_current_image();

    gtk_widget_show_all(window);

    fd = open("/dev/input/event0", O_RDONLY);
    pthread_create(&tid, NULL, input_thread, NULL);

    gtk_main();

    close(fd);
    return 0;
}

这个示例程序将从名为“photos”的文件夹中加载所有的“.jpg”和“.png”文件，并在触摸屏上显示它们。用户可以通过轻触屏幕来滑动浏览相册中的不同照片。这个示例程序使用了GTK+图形用户界面工具包来创建窗口和图像视图，并使用了Linux输入事件API来检测触摸屏输入。