This suggestion probably can't be incorporated into the framework, because it might break previously written apps, but I'll mention it anyway. In the GetLocalizedText() method, it seems like it would make a lot more sense to return the passed in string if a translation is not found. Most of the time, it seems like displaying a message in the default language is much better than displaying nothing at all. And, if you want to capture this with the current code, you end up writing a lot of code like:

lcString = goApp.GetLocalizedText("Hello")

IF EMPTY(lcString)
   lcString = "Hello"
ENDIF

* Do something...

I changed this in my subclass to just return the same string.

Another thing that I changed that might be helpful is I added two properties to LanguageMgr:

lRightToLeft
cSpecialFont

I also added two fields to the language table with the same name.

The properties get set in the SetCurrentLanguage() method. Now when each control localizes itself, you can add code like:

This.RightToLeft = goApp.oLanguageMgr.lRightToLeft

IF !EMPTY(goApp.oLanguageMgr.cSpecialFont)
   This.FontName = goApp.oLanguageMgr.cSpecialFont
ENDIF

This makes it a little easier to support languages that require a special font and/or are written right to left (for example, Arabic).