[DrawText flag] DT_END_ELLIPSIS [WPF equivalent] Trimming [Notes] 
Use the Trimming property with the value CharacterEllipsis. Use WordEllipsis to get Win32 DT_END_ELLIPSIS with DT_WORD_ELIPSIS end ellipsis—in this case, character ellipsis only occurs on words that do not fit on a single line.