unit1.~pas

来自「《Delphi实用程序100例》配套书源码盘」· ~PAS 代码 · 共 50 行

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Image1: TImage;
    Edit1: TEdit;
    Edit2: TEdit;
    Edit3: TEdit;
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    procedure Image1MouseMove(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);
var
  red,green,blue:byte ;
  i:integer;
begin
i:= image1.Canvas.Pixels[x,y];
Blue:= i div 65536;
Green:=i div 256-red;
Red:=i mod 256  ;
Edit1.Caption:=inttostr(Red);
Edit2.Caption:=inttostr(Green);
Edit3.Caption:=inttostr(Blue);
end;


end.