demo.pas

来自「制作API钩子,截获API的源码」· PAS 代码 · 共 57 行

unit Demo;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    Button2: TButton;
    Label1: TLabel;
    Panel1: TPanel;
    GroupBox1: TGroupBox;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;
procedure API_Hookup; stdcall; external 'MYAPIDLL.dll';
procedure API_HookDown;  stdcall; external 'MYAPIDLL.dll';
var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.Button1Click(Sender: TObject);
var
  i:integer;
begin
  API_Hookup;
  Self.Repaint;
  for i:=0 to self.ControlCount-1 do
  begin
     self.Controls[i].Refresh;
  end;
end;

procedure TForm1.Button2Click(Sender: TObject);
var
  i:integer;
begin
  API_HookDown;
  Self.Repaint;
  for i:=0 to self.ControlCount-1 do
  begin
     self.Controls[i].Refresh;
  end;  
end;

end.