Specifies the selected portion of the edit controlís text (Unicode version).
property SelTextW: WideString;
Read SelTextW to determine the value of the selected text. Set SelTextW to replace the selected text with a new string. If there is no selection, but the edit control has focus, set SelTextW to insert a new string into the text at the cursor.
Use this property when IsUnicode is True. Otherwise this property may corrupt string due to Ansi to Unicode conversion.