TRichView.com

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// Returns text of line with caret
function GetCurrentLineText(rve: TCustomRichViewEdit): String;

// Returns visible text (may be, with a line before and after)
function GetVisibleText(rv: TCustomRichView): String;

// Returns all text
function GetAllText(rv: TCustomRichView): String;

// Returns all text in RVData
function GetRVDataText(RVData: TCustomRVData): String;

// Returns text of paragraph section with caret
// (paragraph section is a part of document limited either by
// paragraph breaks or by new line breaks (added with Shift+Enter)
function GetCurrentParaSectionText(rve: TCustomRichViewEdit): String;

// Returns text of paragraph with caret
function GetCurrentParaText(rve: TCustomRichViewEdit): String;

// Returns character to the left of caret.
// If caret is at the beginning of line, - to the right.
// If no character, returns empty string
function GetCurrentChar(rve: TCustomRichViewEdit): String;

// Returns the current word
function GetCurrentWord(rve: TCustomRichViewEdit): String;