unit1.~pas

来自「罗小平<<delphi精要>>一书源码」· ~PAS 代码 · 共 49 行

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    Image1: TImage;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
var
  Mfile: TMetaFile;
  MCanvas: TMetaFileCanvas;
  R: TRect;
begin
  Mfile := TMetaFile.Create;
  MCanvas := TMetaFileCanvas.Create(Mfile, 0);
  with MCanvas do
  begin
    Brush.Color := clRed;
    Ellipse(0,0,100,100);
    R := Rect(Button1.Left, Button1.Top, Button1.Left + 100, Button1.Top + 30);
    CopyRect(Rect(0, 0, 100, 50), Canvas, R);
    Free;
  end;
  Form1.Canvas.Draw(0,0,Mfile);
  Mfile.SaveToFile('H:\AA.emf');
  Mfile.Free;
end;

end.