Re: [PATCH v5 0/8] MR6323: winewayland: Support GL/VK rendering in child windows (alt).

[Alexandros Frantzis (＠afrantzis)]

Alexandros Frantzis (@afrantzis) commented about dlls/winewayland.drv/window.c:
> struct wayland_client_surface *get_client_surface(HWND hwnd)
>  {
>      struct wayland_client_surface *client;
> - struct wayland_surface *surface;
> struct wayland_win_data *data;
> - HWND toplevel;
> -
> - if ((toplevel = NtUserGetAncestor(hwnd, GA_ROOT)) == hwnd) toplevel = 0;

This prevents attaching a (non-child) client surface to its window surface. The client surface may be eventually attached during `wayland_win_data_update_wayland_surface`, but depending on the application this may not happen at the right time (or ever unless there is some user interaction).