漂亮的圆形按钮.

unit BottR;

interface

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

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

var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.FormCreate(Sender: TObject);
var
rgn :hrgn;
begin
rgn := CreateRoundRectRgn(0,0,Button1.width,Button1.height,20,20);
SetWindowRgn(button1.handle,rgn,true);
end;

procedure TForm1.FormPaint(Sender: TObject);
begin
canvas.pen.Width := 5;
canvas.pen.color := clblue;
with button1 do
  canvas.RoundRect(left,top,width+left,height+top,20,20);
end;

end.

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