RichEdit1
FindText (Delphi) 描述 此示例需要一个 TRichEdit、一个 TButton 和一个 TFindDialog。单击“单击”按钮将在编辑控件的右侧显示“查找”对话框。填写“查找内容”文本并单击“查找下一个”按钮将在“丰富编辑”控件中选择上一个选择之后的第一个匹配字符串。 法典 procedure TForm1.Button1Click(Sender: TObject); begin FindDialog1.Position := Point(RichEdit1.Left + RichEdit1.Width, RichEdit1.Top); FindDialog1.Execute; end; procedure TForm1.FindDialog1Find(Sender: TObject); var FoundAt: LongInt; StartPos, ToEnd: Integer; mySearchTypes : TSearchTypes; myFindOptions : TFindOptions; begin mySearchTypes := []; with RichEdit1 do begin if frMatchCase in FindDialog1.Options then mySearchTypes := mySearchTypes + [stMatchCase]; if frWholeWord in FindDialog1.Options then mySearchTypes := mySearchTypes + [stWholeWord]; { Begin the search after the current selection, if there is one. } { Otherwise, begin at the start of the text. } if SelLength <> 0 then StartPos := SelStart + SelLength else StartPos := 0; { ToEnd is the length from StartPos through the end of the text in the rich edit control. } ToEnd := Length(Text) - StartPos; FoundAt := FindText(FindDialog1.FindText, StartPos, ToEnd, mySearchTypes); if FoundAt <> -1 then begin SetFocus; SelStart := FoundAt; SelLength := Length(FindDialog1.FindText); end else Beep; end; end; procedure TForm1.FormCreate(Sender: TObject); const Path = 'OverView.RTF'; begin RichEdit1.PlainText := False; RichEdit1.Lines.LoadFromFile(Path); RichEdit1.ScrollBars := ssVertical; end;
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