void clear_recent()
{
recentfiles=g_strconcat(g_get_home_dir(),"/.recently-used*",NULL);
gchar* clearrecent[] = {g_strdup("rm"), g_strdup("-f"), g_strdup(recentfiles), NULL };
g_spawn_async(NULL,clearrecent,NULL,
            G_SPAWN_SEARCH_PATH | G_SPAWN_DO_NOT_REAP_CHILD,
            NULL,NULL,&pd,NULL);
g_free(clearrecent[4]);
}

g_signal_connect(ClearButton,"clicked",G_CALLBACK(clear_recent),NULL);