Re: [PATCH v3 0/8] MR5665: For a CS_PARENTDC child use parent for visible region calculations.

[Jinoh Kang (＠iamahuman)]

Jinoh Kang (@iamahuman) commented about server/window.c:
>  struct region *tmp;
>
>  if (!get_window_visible_rect( win, &rect, frame )) return NULL;
> -
> - if (win->parent && is_window_using_parent_dc( win ))
> - {
> -
>    int offset_x, offset_y;
> -
> -
>    if (!get_window_visible_rect( win->parent, &rect, 0 )) return NULL;

What if the parent window is using parent DC too? Shall we ascend the ancestor chain until we meet a non-`CS_PARENTDC` window?