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unit Unit1;
interface
uses
Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Vcl.ExtCtrls;
type
TForm1 = class(TForm)
Image1: TImage;
Image2: TImage;
Button1: TButton;
procedure Button1Click(Sender: TObject);
procedure FormCreate(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
uses jpeg;
procedure TForm1.Button1Click(Sender: TObject);
var
Bitmap: TBitmap;
Rgn: HRGN; { long型}
jpeg: TJPEGImage;
begin
Bitmap := TBitmap.Create;
jpeg := TJPEGImage.Create;
jpeg.Assign(image1.Picture.Graphic);
Bitmap.Assign(jpeg);
Rgn := CreateEllipticRgn(0, 0, 150, 150); { 圆形区域}
SelectClipRgn(image2.Canvas.Handle, Rgn);
image2.Transparent := True;
with image2.Canvas do
begin
Brush.Style := bsClear;
Draw(0, 0, Bitmap);
end;
Bitmap.Free;
jpeg.free;
end;
procedure TForm1.FormCreate(Sender: TObject);
begin
image1.Picture.LoadFromFile('..\..\bbbb.jpg');
end;
end.