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| unit Unit1;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, FileUtil, Forms, Controls, Graphics, Dialogs, StdCtrls,
Windows,
ExtCtrls;
type
{ TForm1 }
TForm1 = class(TForm)
Label1: TLabel;
Panel1: TPanel;
UpdateTimer: TTimer;
procedure FormCreate(Sender: TObject);
procedure FormDestroy(Sender: TObject);
procedure UpdateTimerTimer(Sender: TObject);
private
{ private declarations }
DesktopDC: HDC;
public
{ public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.lfm}
{ TForm1 }
procedure TForm1.UpdateTimerTimer(Sender: TObject);
var
CursorPos: TPoint;
begin
if GetCursorPos(CursorPos) then
begin
Label1.Caption := 'Cursor pos: [' + IntToStr(CursorPos.x) + ', ' +
IntToStr(CursorPos.y) + ']';
Panel1.Color := GetPixel(DesktopDC, CursorPos.x, CursorPos.y);
end;
end;
procedure TForm1.FormCreate(Sender: TObject);
begin
DesktopDC := GetDC(0);
if (DesktopDC <> 0) then
UpdateTimer.Enabled := True;
end;
procedure TForm1.FormDestroy(Sender: TObject);
begin
ReleaseDC(GetDesktopWindow, DesktopDC);
end;
end. |
Partager