+#define wxMAC_USE_CARBON_TIMER 1
+
+#if wxMAC_USE_CARBON_TIMER
+
+struct MacTimerInfo
+{
+ wxCarbonTimerImpl* m_timer;
+ EventLoopTimerUPP m_proc;
+ EventLoopTimerRef m_timerRef;
+};
+
+static pascal void wxProcessTimer( EventLoopTimerRef theTimer, void *data )
+{
+ if ( data == NULL )
+ return;
+
+ wxCarbonTimerImpl* timer = (wxCarbonTimerImpl*)data;
+
+ if ( timer->IsOneShot() )
+ timer->Stop();
+
+ timer->Notify();
+}
+
+wxCarbonTimerImpl::wxCarbonTimerImpl(wxTimer *timer)
+ : wxTimerImpl(timer)
+{
+ m_info = new MacTimerInfo();
+ m_info->m_timer = this;
+ m_info->m_proc = NULL;
+ m_info->m_timerRef = kInvalidID;
+}
+
+bool wxCarbonTimerImpl::IsRunning() const
+{
+ return ( m_info->m_timerRef != kInvalidID );
+}
+
+wxCarbonTimerImpl::~wxCarbonTimerImpl()
+{
+ delete m_info;
+}
+
+bool wxCarbonTimerImpl::Start( int milliseconds, bool mode )
+{
+ (void)wxTimerImpl::Start(milliseconds, mode);
+
+ wxCHECK_MSG( m_milli > 0, false, wxT("invalid value for timer timeout") );
+ wxCHECK_MSG( m_info->m_timerRef == NULL, false, wxT("attempting to restart a timer") );
+
+ m_info->m_timer = this;
+ m_info->m_proc = NewEventLoopTimerUPP( &wxProcessTimer );