fine for vertical scrolling as all lines have the same height but is rather
ugly for horizontal scrolling if proportional font is used. This is why we
manually update and use SData().m_ofsHorz which contains the length of the string
fine for vertical scrolling as all lines have the same height but is rather
ugly for horizontal scrolling if proportional font is used. This is why we
manually update and use SData().m_ofsHorz which contains the length of the string