Conventions used

There are a number of text conventions used throughout this book.

Code in text: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: “This will add a form inherited from TForm3D.”

A block of code is set as follows:

const
  DEFAULT_OPACITY = 1;
  POS_X = 150;
  POS_Y = 150;
  SUN_RADIUS = 50;
  RAY_COUNT = 12;
  RAY_LENGTH = 100;

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

procedure TForm1.PaintBox1Paint(Sender: TObject;
  Canvas: TCanvas);
begin
  Canvas.BeginScene;
  try
    // access "Canvas" methods and properties here
  finally
    Canvas.EndScene;
  end;
end;

Any command-line input or output is written as follows:

procedure TMViewForm.FormCreate(Sender: TObject);
begin
   MultiView1.Mode := TMultiViewMode.PlatformBehaviour;
   ComboMode.ItemIndex := 0;
end;

Bold: Indicates a new term, an important word, or words that you see onscreen. For instance, words in menus or dialog boxes appear in bold. Here is an example: “Now select the grid, right-click on it, or see the commands at the bottom of the Object Inspector and open its Items Editor.”

Tips or important notes

Appear like this.