I have attached a custom dictionary to the winspellchecker. The file is a plain text file: "Norwegian.txt", with each word on one line.

The control recognizes the dictionary OK, and things seems to work. But -- after the winspellchecker has accessed the dictionary all the norwegian characters in the file is replaced with black squares with questionmarks. 

The ultraformattedtexteditor accepts the norwegian special characters fine when they are input from my keyboard.