GMainLoop添加时钟回调函数

本程序实现了每隔1秒钟便输出当前系统时间。

#include

gboolean show_time(gpointer data);

int main(int argc,char** argv){

    GMainLoop* main_loop = NULL;

    guint i = 0;

    

    main_loop = g_main_loop_new(NULL,FALSE);

    g_timeout_add_seconds(1,(GSourceFunc)show_time,NULL);

    g_main_loop_run(main_loop);

    g_main_loop_quit(main_loop);

    return 0;

}

gboolean show_time(gpointer data){

    GTimeVal now;

    g_get_current_time(&now);

    struct tm* time_now;

    time_now = localtime(&now.tv_sec);

    gchar time_str[256] = {0};

    strftime(time_str,256,"%Y-%m-%d %H:%M:%S",time_now);

    g_print("%s\n",time_str);

    return TRUE;

}