[NumLock]

The RegisterHotKey function defines a hot key for the current thread

Код:

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    procedure FormCreate(Sender: TObject);
    procedure FormDestroy(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
    IsRegisterHotKey: Boolean;
    procedure WMHOTKEY(var msg: TMessage); message WM_HOTKEY;
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
begin
  IsRegisterHotKey:=RegisterHotKey(Handle, 1, MOD_WIN, VK_ADD);
end;

procedure TForm1.FormDestroy(Sender: TObject);
begin
  if IsRegisterHotKey then UnregisterHotKey(Handle, 1);
end;

procedure TForm1.WMHOTKEY(var msg: TMessage);
var
  idHotKey: Integer;
  fuModifiers: Cardinal;
  uVirtKey: Cardinal;
begin
  idHotKey:=msg.WParam;
  fuModifiers:=LOWORD(msg.LParam);
  uVirtKey:=HIWORD(msg.LParam);
  if (idHotKey=1) and (fuModifiers=MOD_WIN) and (uVirtKey=VK_ADD) then
бегин
энд;
end;

end.