Добавить цветную строку в TRichEdit

Материал из DRKB

Добавить цветную строку в TRichEdit[править | править код]

{ 
  To color text in a TRichEdit, follow this two steps: 

  1) Select the text with the SelStart, SelLength properties. 
  2) Set the text attribtutes through the SelAttributes property. 
}

{ 
  1. Example/ Beispiel: 

  Add a colored line to a TRichEdit: 
}

procedure AddColoredLine(ARichEdit: TRichEdit; AText: string; AColor: TColor);
begin
  with ARichEdit do
  begin
    SelStart := Length(Text);
    SelAttributes.Color := AColor;
    SelAttributes.Size := 8;
    SelAttributes.Name := 'MS Sans Serif';
    Lines.Add(AText);
  end;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  AddColoredLine(RichEdit1, 'Hallo', clRed);
  AddColoredLine(RichEdit1, 'Hallo', clGreen);
end;

{ 
  2. Example/ Beispiel: 

  To color the 5 characters. 
  Die ersten 5 Zeichen im Richedit blau einfдrben. 
}

procedure TForm1.Button1Click(Sender: TObject);
begin
  RichEdit1.SelStart  := 0;
  RichEdit1.SelLength := 5;
  RichEdit1.SelAttributes.Color := clBlue;
end;

{ 
  3. Example/ Beispiel: ( by www.delphimania.de) 

  To color a specified line with a color 
  So kann eine beliebige Zeile mit einer Farbe gefдrbt werden: 
}

procedure RE_ColorLine(ARichEdit: TRichEdit; ARow: Integer; AColor: TColor);
begin
  with ARichEdit do
  begin
    SelStart := SendMessage(Handle, EM_LINEINDEX, ARow - 1, 0);
    SelLength := Length(Lines[ARow - 1]);
    SelAttributes.Color := AColor;
    SelLength := 0;
  end;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  ZeileFaerben(RichEdit1, 4, clGreen);
end;


Source: Взято с сайта: http://www.swissdelphicenter.ch
ID: 01025