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

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

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

带滚动控件

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.