Given an LCID,
how does one determine whether the language lays out left-to-right
or right-to-left?
One suggestion was simply to hard-code the list of known right-to-left
languages, and if the language isn't on the list, then assume that it
is left-to-right.
This technique is clearly fragile, because Windows adds support for new
languages not infrequently, and if one of those is a right-to-left
language, then your table is now out of date.
And besides, there are languages whose layout is neither left-to-right
nor right-to-left.
For example, Chinese and Japanese traditionally lay out top-to-bottom.
To obtain the text layout direction programmatically,
call
GetLocaleInfoEx
with
LOCALE_.
And just hope that nobody ever hands you a boustrophedonic language.