Editing-methods for changing text of text item or name of non-text item.
procedure SetItemTextEd(ItemNo: Integer; const s: String);
procedure SetItemTextEdA(ItemNo: Integer; const s: TRVAnsiString);
procedure SetItemTextEdW(ItemNo: Integer; const s: TRVUnicodeString);
(Introduced in version 1.4, 1.7)
Parameters:
ItemNo – index of the item. Items are indexed from 0 to ItemCount-1, GetItemStyle returns type of item.
Items of subdocuments (table cells) are not included in the items range of the main document. For items in cells, activate inplace-editor, select the proper item in the cell (SelSelectionBounds), and call SetItemTextEd* of this inplace-editor. Alternatively, you can use SetCurrentItemText*.
s – text assigned to the item. For text items, this is a visible text. For non-text item, this is a string value associated with the item (not displayed). S must not contain line break (CR and LF) characters. For text items, it must not contain CR, LF, TAB, FF characters (#13, #10, #9, #12).
Unicode notes:
Internally, text is stored as Unicode. SetItemTextEdA converts ANSI to Unicode. If the ItemNo-th item is a text item, a code page for conversion is calculated basing on the its Charset. If it is equal to DEFAULT_CHARSET, and for non-text items, Style.DefCodePage is used.
SetItemTextEd works:
▪like SetItemTextEdA, in Delphi 2007 and older
▪like SetItemTextEdW, in Delphi 2009 and newer
▪with UTF-8 string, in Lazarus
Methods type: 
editing-style.
See also methods:
See also methods of TCustomRichView:
See also properties:
See also:
▪"Tags";