window_messages.cpp

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// $Id: Window_Messages.cpp 82610 2008-08-12 19:46:36Z parsons $

// ============================================================================
//
// = LIBRARY
//    examples
//
// = FILENAME
//    Window_Messages.cpp
//
// = DESCRIPTION
//
//    Tests the Msg_WFMO_Reactor's ability to handle regular events
//    and window messages.
//
// = AUTHOR
//
//    Irfan Pyarali <[e-mail]>
//
// ============================================================================

#include "ace/OS_main.h"

#if defined (ACE_WIN32) && !defined (ACE_LACKS_MSG_WFMO)

#include "ace/Msg_WFMO_Reactor.h"
#include "ace/Reactor.h"
#include "ace/Auto_Ptr.h"
#include "ace/Auto_Event.h"

ACE_RCSID(WFMO_Reactor, Window_Messages, "$Id: Window_Messages.cpp 82610 2008-08-12 19:46:36Z parsons $")

class Event_Handler : public ACE_Event_Handler
{
public:
  int handle_signal (int signum, siginfo_t * = 0, ucontext_t * = 0);

  ACE_Auto_Event handle_;
  int iterations_;
};

int
Event_Handler::handle_signal (int, siginfo_t *, ucontext_t *)
{
  --this->iterations_;

  if (this->iterations_ == 0)
    ACE_Reactor::end_event_loop ();

  return 0;
}

static Event_Handler *global_event_handler;

void WINAPI
timer_callback (HWND,
                UINT,
                UINT,
                DWORD dwTime)
{
  ACE_DEBUG ((LM_DEBUG, "(%t) timeout occured @ %u\n", dwTime));

  global_event_handler->handle_.signal ();
}

int
ACE_TMAIN (int, ACE_TCHAR*[])
{
  // Manage memory automagically.
  ACE_Reactor_Impl *impl = new ACE_Msg_WFMO_Reactor;
  auto_ptr<ACE_Reactor> reactor (new ACE_Reactor (impl, 1));
  ACE_Reactor::instance (reactor.get ());

  Event_Handler event_handler;
  global_event_handler = &event_handler;

  event_handler.iterations_ = 5;
  int result =
    ACE_Reactor::instance ()->register_handler (&event_handler,
                                                event_handler.handle_.handle ());
  ACE_ASSERT (result == 0);

  ACE_Time_Value timeout (1);
  result = 
    ACE_Utils::truncate_cast<int> (
      ::SetTimer (0,                         // handle of window for timer messages
                  0,                             // timer identifier
                  timeout.msec (),               // time-out value
                  (TIMERPROC) &timer_callback)); // address of timer procedure
 
  ACE_ASSERT (result != 0);

  ACE_Reactor::run_event_loop ();

  return 0;
}
#else /* !ACE_WIN32 */
int
ACE_TMAIN (int , ACE_TCHAR *[])
{
  return 0;
}
#endif /* ACE_WIN32 && !ACE_LACKS_MSG_WFMO */