Mostly to show that there is a WM_ACTIVATE message
before WM_SYSCOMMAND SC_RESTORE and after WM_WINDOWPOSCHANGED

The Alt+Tab test won't work on non-Windows because the emulated key inputs
doesn't reach the host, unless we required user interaction.
Signed-off-by: Zhiyi Zhang <zzhang@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>