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| 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
DLL :THandle;
Hook :hHook;
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.FormCreate(Sender: TObject);
var
HookProc :pointer;
SetHookInfo :procedure (aHook :HHook); stdCall;
begin
DLL := LoadLibrary(PChar(ExtractFilePath(Application.ExeName) +'SetCurHook.dll'));
if DLL <> 0 then
begin
HookProc := GetProcAddress(DLL, 'HookProc');
@SetHookInfo := GetProcAddress(DLL, 'SetHookInfo');
Hook := SetWindowsHookEx(WH_CALLWNDPROCRET, HookProc, DLL, 0);
SetHookInfo(Hook);
end;
end;
procedure TForm1.FormDestroy(Sender: TObject);
begin
if DLL <> 0 then
begin
UnhookWindowsHookEx(Hook);
FreeLibrary(DLL);
end;
end;
end. |
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