編譯這個DLL後,再新建一個程序調用這個DLL的InstallHook並傳入目標進程的主窗口句柄就可:
unit fmMain;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls;
type
TForm1 = class(TForm)
Button1: TButton;
Button2: TButton;
Edit1: TEdit;
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
InstallHook: function (SWindow: THandle):Boolean;stdcall;
UnHook: procedure;stdcall;
implementation
{$R *.dfm}
procedure TForm1.Button1Click(Sender: TObject);
var
ModuleHandle: THandle;
TmpWndHandle: THandle;
begin
TmpWndHandle := 0;
TmpWndHandle := FindWindow(nil, "目標窗口的標題");
if not isWindow(TmpWndHandle) then
begin
MessageBox(self.Handle, "沒有找到窗口", "!!!", MB_OK);
exit;
end;
ModuleHandle := LoadLibrary("Hook.dll");
@InstallHook := GetProcAddress(ModuleHandle, "InstallHook");
@UnHook := GetProcAddress(ModuleHandle, "UnHook");
if InstallHook(FindWindow(nil, "Untitled")) then
ShowMessage("Hook OK");
end;
procedure TForm1.Button2Click(Sender: TObject);
begin
UnHook
end;
end.
