delay load code.

work - e.g. Delphi buttons have the classname "TButton" for which no
superclass will be found. Instead, use initial subclass window procs
that have the subclass hardcoded and store it for the "real" subclass
window proc.

groupboxes not overlap.

- OLEIVERB_INPLACEACTIVATE is the same as OLEIVERB_UIACTIVATE.

also backup the old metrics. That way, themed system colors are set
even uxtheme was not loaded and initialized yet, and when a theme is
deactivated, the colors prior to the activation are restored as well.
Also, not having to set the system colors in uxtheme startup works
around weird problems where SetSystemColors() ended up being called
from inside window creation and this seemingly led to some creation
message being sent twice.

acceleration.

a method on it.

parent (based on a patch by Richard Cohen).

winerror.h.

Add missing spec file entries.