add wxUSE_WEAKREF (modified partially applied patch 1870445)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@51614 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/event.cpp

@@ -1060,6 +1060,7 @@ wxEvtHandler::~wxEvtHandler()
         {
             wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)*it;
 
+#if wxUSE_WEAKREF
             // Remove ourselves from sink destructor notifications
             // (this has usually been been done, in wxTrackable destructor)
             wxEvtHandler *eventSink = entry->m_eventSink;
@@ -1073,6 +1074,7 @@ wxEvtHandler::~wxEvtHandler()
                     delete evtConnRef;
                 }
             }
+#endif // wxUSE_WEAKREF
 
             if (entry->m_callbackUserData)
                 delete entry->m_callbackUserData;
@@ -1372,6 +1374,7 @@ void wxEvtHandler::Connect( int id, int lastId,
     // Insert at the front of the list so most recent additions are found first
     m_dynamicEvents->Insert( (wxObject*) entry );
 
+#if wxUSE_WEAKREF
     // Make sure we get to know when a sink is destroyed
     if ( eventSink )
     {
@@ -1381,6 +1384,7 @@ void wxEvtHandler::Connect( int id, int lastId,
         else
             evtConnRef = new wxEventConnectionRef(this, eventSink);
     }
+#endif // wxUSE_WEAKREF
 }
 
 bool wxEvtHandler::Disconnect( int id, int lastId, wxEventType eventType,
@@ -1391,6 +1395,7 @@ bool wxEvtHandler::Disconnect( int id, int lastId, wxEventType eventType,
     if (!m_dynamicEvents)
         return false;
 
+#if wxUSE_WEAKREF
     // Remove connection from tracker node (wxEventConnectionRef)
     if ( eventSink )
     {
@@ -1398,6 +1403,7 @@ bool wxEvtHandler::Disconnect( int id, int lastId, wxEventType eventType,
         if ( evtConnRef )
             evtConnRef->DecRef();
     }
+#endif // wxUSE_WEAKREF
 
     wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
     while (node)
@@ -1489,6 +1495,7 @@ void *wxEvtHandler::DoGetClientData() const
     return m_clientData;
 }
 
+#if wxUSE_WEAKREF
 // A helper to find an wxEventConnectionRef object
 wxEventConnectionRef *
 wxEvtHandler::FindRefInTrackerList(wxEvtHandler *eventSink)
@@ -1528,6 +1535,7 @@ void wxEvtHandler::OnSinkDestroyed( wxEvtHandler *sink )
         node = node_nxt;
     }
 }
+#endif // wxUSE_WEAKREF
 
 #endif // wxUSE_BASE