unit1.pas

来自「Delphi 7应用编程150例附书源码,第2章-图像处理实例」· PAS 代码 · 共 48 行

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Image1: TImage;
    Image2: TImage;
    procedure Image1MouseMove(Sender: TObject; Shift: TShiftState; X,
      Y: Integer);
    procedure FormMouseMove(Sender: TObject; Shift: TShiftState; X,
      Y: Integer);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Image1MouseMove(Sender: TObject; Shift: TShiftState; X,
  Y: Integer);
begin
    StretchBlt(Image2.Canvas.Handle,0,0,Image2.Width,Image2.Height,Image1.Canvas.Handle,
    X-20,Y-20,40,40,SRCCOPY);
    Image2.Refresh;
    Screen.Cursors[1]:=LoadCursorFromFile('MAGNIFY.CUR');
    Self.Cursor:=1;
end;

procedure TForm1.FormMouseMove(Sender: TObject; Shift: TShiftState; X,
  Y: Integer);
begin
    Screen.Cursors[1]:=crDefault;
    Self.Cursor:=1;
end;

end.