user32: Factorize graphics driver's WindowCreate and ShowWindowin user32.

[Pierre d'Herbemont]

On 1 déc. 06, at 08:38, Dmitry Timoshkov wrote:

> The problem is that for top level windows we need to route ShowWindow
> actions to a Window Manager/Host Windowing System, so that actions
> like minimize/maximize/restore would be properly handled. We don't
> do this at the moment, but we need to.

ok thanks, I got your point.

Pierre.