painttest.pas

来自「实现SMALL world的界面」· PAS 代码 · 共 46 行

unit painttest;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    procedure FormPaint(Sender: TObject);
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
     procedure DrawSolidEdge(Canvas: TCanvas);
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.DrawSolidEdge(Canvas: TCanvas);
begin
   Canvas.Pen.Color := clRed;
   Canvas.Ellipse(20,20,100,100);
   Canvas.Pen.Color := clBlue;
   Canvas.Rectangle(200,200,300,300);
end;
procedure TForm1.FormPaint(Sender: TObject);
begin
   //DrawSolidEdge(Canvas);
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
    DrawSolidEdge(Canvas);
end;

end.