- Paint the border correctly if its size is bigger than 1 pixel.
- Don't paint text over the border.
- Fix the edit control placement tests: Put the edit box in a parent
window.
- Tidied up the edit control tests.
half of a character should return current char and clicking on the
second half should return next char)
- EM_POSFROMCHAR should return -1 if character index is greater or
equal to text length
- single-line edit control does not want all messages
- additional style combinations are possible for both multi-line and
single-line edit controls
- tests to confirm it