riched20: add stub ITextDocument

[Alexandre Julliard]

Juan Lang <juan_lang at yahoo.com> writes:

> +#define DECL_IFACE(ifc) const I##ifc##Vtbl *lp##ifc##Vtbl;
> +
> +#define IFACE2IMPL(cls,ifc,iface) ((cls*)((BYTE*)(iface)-offsetof(cls,lp##ifc##Vtbl)))
> +#define IMPL2IFACE(ifc,x) ((I##ifc*)&(x)->lp##ifc##Vtbl)

Please avoid that sort of macros, it makes grepping for things a lot
harder. Just spell things out explicitly, and for IFACE2IMPL define a
couple of inline functions instead.

-- 
Alexandre Julliard
julliard at winehq.org