mousehookdemou.pas

DelphiWin32核心API参考光盘内容.是学习书籍中的源码,便于学习.

unit MouseHookDemoU;

interface

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

type
  TForm1 = class(TForm)
    Label1: TLabel;
    Button1: TButton;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

  function SetHook: Boolean; stdcall;
  function RemoveHook: Boolean; stdcall;

var
  Form1: TForm1;

implementation

{$R *.dfm}

function SetHook; external 'GMouseHook.dll' name 'SetHook';
function RemoveHook; external 'GMouseHook.dll' name 'RemoveHook';

procedure TForm1.Button1Click(Sender: TObject);
begin
  {set the hook}
  if SetHook then
    ShowMessage('Global Mouse Hook Set, Click on Desktop')
  else
    ShowMessage('Global Mouse Hook Not Set');
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  {remove the hook}
  if RemoveHook then
    ShowMessage('Global Mouse Hook Removed, Click on Desktop')
  else
    ShowMessage('Global Mouse Hook Not Removed');
end;

end.