画图学习 [4] TextOut TextWidth TextHeigh



unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;

type
  TForm1 = class(TForm)
    btn1: TButton;
    procedure btn1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.btn1Click(Sender: TObject);
const
  st: array [0..1] of string =
  (('日月忽其不淹兮'),('春与秋其代序'));
  a: Integer = 20;
  b: Integer = 20;
var
  i,j:Integer;
  x,y:Integer;
begin
  //ShowMessage(st[0][1]);
  x := 20;
  y := 20;
  for i := 0 to Length(st)-1 do
    begin
      for j := 1 to Length(st[i]) do
      begin
        Canvas.TextOut(x, y, st[i][j]);
        x := x + Canvas.TextWidth(st[i][j]) + a;
      end;
      x := 20;
      y := y + Canvas.TextHeight(st[i][j]) + b;
    end;
end;

end.