Delphi 之 TRichEdit组件

  TRichEdit组件属性

  Lines

用来编辑单行添加文本或删除文本

  HideSelection

为true是,组件有焦点,false则无焦点

  TRichEdit组件方法

  Clear

删除文本

FindText

查找指定的文本

示例

查找RichEdit组件指定的字符串

Delphi 之 TRichEdit组件 

ibegin:= richedit1.FindText(Edit1.Text,ibegin,Length(RichEdit1.text),[stMatchCase]);
  if ibegin <> -1 then
  begin
    RichEdit1.SetFocus;
    RichEdit1.SelStart:=ibegin;
    RichEdit1.SelLength:=1;
    inc(ibegin);
  end
  else if ibegin = -1 then
  begin
    ibegin:= 0;
    Application.MessageBox(没找到变量,提示,MB_OKCANCEL+mb_iconinformation);

  end;

LoadFromFile

  按指定的文件路径将文本内容载入到TRichEdit组件中

示例:将文本文本的内容载入到TRichEdit组件中

Delphi 之 TRichEdit组件

 

procedure TForm1.Button1Click(Sender: TObject);
begin
  if OPenDialog1.Execute then
  begin
    RichEdit1.Lines.LoadFromFile(OpenDialog1.FileName);
  end;
end;

带滚动控件

Delphi 之 TRichEdit组件

procedure TForm1.BitBtn1Click(Sender: TObject);
begin
  with RichEdit1 do
  begin
    SelStart:= Length(text);
    Perform(EM_SCROLL,0,0);
  end;
end;

procedure TForm1.BitBtn2Click(Sender: TObject);
begin
  with RichEdit1 do
  begin
    Perform(EM_SCROLL,SB_LINEDOWN,0);
  end;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  if OpenDialog1.Execute then
  begin
    RichEdit1.Lines.LoadFromFile(OpenDialog1.FileName);
  end;
end;

end.

 

Delphi 之 TRichEdit组件

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