image = XCreateImage (dpy, visual, 32, ZPixmap, 0, 0, w, h, 32, 0);
image->data = (char *) malloc(h * image->bytes_per_line);
image = XCreateImage (dpy, visual, 32, ZPixmap, 0, 0, w, h, 32, 0);
image->data = (char *) malloc(h * image->bytes_per_line);