More _T() in asserts...

[wxWidgets.git] / src / common / event.cpp

diff --git a/src/common/event.cpp b/src/common/event.cpp
index 79580ae5c119a92042b6594ca4805bb0b29de7c9..b7cb5cafaf6e01a7c849a20729f88778dc7dca9b 100644 (file)
--- a/src/common/event.cpp
+++ b/src/common/event.cpp
@@ -37,6 +37,7 @@
     IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent)

+    IMPLEMENT_DYNAMIC_CLASS(wxScrollWinEvent, wxEvent)

     IMPLEMENT_DYNAMIC_CLASS(wxMouseEvent, wxEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxKeyEvent, wxEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxSizeEvent, wxEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxMouseEvent, wxEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxKeyEvent, wxEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxSizeEvent, wxEvent)


@@ -59,6 +60,8 @@
     IMPLEMENT_DYNAMIC_CLASS(wxNavigationKeyEvent, wxCommandEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxPaletteChangedEvent, wxEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxQueryNewPaletteEvent, wxEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxNavigationKeyEvent, wxCommandEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxPaletteChangedEvent, wxEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxQueryNewPaletteEvent, wxEvent)

+    IMPLEMENT_DYNAMIC_CLASS(wxWindowCreateEvent, wxEvent)
+    IMPLEMENT_DYNAMIC_CLASS(wxWindowDestroyEvent, wxEvent)

 
     const wxEventTable *wxEvtHandler::GetEventTable() const
         { return &wxEvtHandler::sm_eventTable; }
 
     const wxEventTable *wxEvtHandler::GetEventTable() const
         { return &wxEvtHandler::sm_eventTable; }


@@ -67,17 +70,16 @@
         { (const wxEventTable *)NULL, &wxEvtHandler::sm_eventTableEntries[0] };
 
     const wxEventTableEntry wxEvtHandler::sm_eventTableEntries[] =
         { (const wxEventTable *)NULL, &wxEvtHandler::sm_eventTableEntries[0] };
 
     const wxEventTableEntry wxEvtHandler::sm_eventTableEntries[] =

-        { { 0, 0, 0,
-    #ifdef __SGI_CC__
-        // stupid SGI compiler --- offer aug 98
-        0L }
-    #else // !SGI CC
-        NULL }
-    #endif // SGI/!SGI
-        };
+        { { 0, 0, 0, (wxObjectEventFunction) NULL, (wxObject*) NULL } };

 
 #endif // !USE_SHARED_LIBRARY
 
 
 #endif // !USE_SHARED_LIBRARY
 

+#if wxUSE_THREADS
+/* To put pending event handlers */
+extern wxList *wxPendingEvents;
+extern wxCriticalSection *wxPendingEventsLocker;
+#endif
+

 /*
  * General wxWindows events, covering
  * all interesting things that might happen (button clicking, resizing,
 /*
  * General wxWindows events, covering
  * all interesting things that might happen (button clicking, resizing,


@@ -91,11 +93,25 @@ wxEvent::wxEvent(int theId)
 {
     m_eventType = wxEVT_NULL;
     m_eventObject = (wxObject *) NULL;
 {
     m_eventType = wxEVT_NULL;
     m_eventObject = (wxObject *) NULL;

-    m_eventHandle = (char *) NULL;

     m_timeStamp = 0;
     m_id = theId;
     m_skipped = FALSE;
     m_callbackUserData = (wxObject *) NULL;
     m_timeStamp = 0;
     m_id = theId;
     m_skipped = FALSE;
     m_callbackUserData = (wxObject *) NULL;

+    m_isCommandEvent = FALSE;
+}
+
+void wxEvent::CopyObject(wxObject& object_dest) const
+{
+    wxEvent *obj = (wxEvent *)&object_dest; 
+    wxObject::CopyObject(object_dest);
+
+    obj->m_eventType = m_eventType;
+    obj->m_eventObject = m_eventObject;
+    obj->m_timeStamp = m_timeStamp;
+    obj->m_id = m_id;
+    obj->m_skipped = m_skipped;
+    obj->m_callbackUserData = m_callbackUserData;
+    obj->m_isCommandEvent = m_isCommandEvent;

 }
 
 /*
 }
 
 /*


@@ -111,7 +127,20 @@ wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId)
     m_extraLong = 0;
     m_commandInt = 0;
     m_id = theId;
     m_extraLong = 0;
     m_commandInt = 0;
     m_id = theId;

-    m_commandString = (char *) NULL;
+    m_commandString = (wxChar *) NULL;
+    m_isCommandEvent = TRUE;
+}
+
+void wxCommandEvent::CopyObject(wxObject& obj_d) const
+{
+    wxCommandEvent *obj = (wxCommandEvent *)&obj_d; 
+
+    wxEvent::CopyObject(obj_d);
+
+    obj->m_clientData   = m_clientData;
+    obj->m_clientObject = m_clientObject;
+    obj->m_extraLong    = m_extraLong;
+    obj->m_commandInt   = m_commandInt;

 }
 
 /*
 }
 
 /*


@@ -128,6 +157,28 @@ wxScrollEvent::wxScrollEvent(wxEventType commandType,
     m_commandInt = pos;
 }
 
     m_commandInt = pos;
 }
 

+/*
+ * ScrollWin events
+ */
+
+wxScrollWinEvent::wxScrollWinEvent(wxEventType commandType,
+                                   int pos,
+                                   int orient)
+{
+    m_eventType = commandType;
+    m_extraLong = orient;
+    m_commandInt = pos;
+}
+
+void wxScrollWinEvent::CopyObject(wxObject& obj_d) const
+{
+    wxScrollWinEvent *obj = (wxScrollWinEvent*)&obj_d; 
+
+    wxEvent::CopyObject(obj_d);
+
+    obj->m_extraLong    = m_extraLong;
+    obj->m_commandInt   = m_commandInt;
+}

 
 /*
  * Mouse events
 
 /*
  * Mouse events


@@ -148,6 +199,23 @@ wxMouseEvent::wxMouseEvent(wxEventType commandType)
     m_y = 0;
 }
 
     m_y = 0;
 }
 

+void wxMouseEvent::CopyObject(wxObject& obj_d) const
+{
+    wxMouseEvent *obj = (wxMouseEvent *)&obj_d;
+
+    wxEvent::CopyObject(obj_d);
+
+    obj->m_metaDown = m_metaDown;
+    obj->m_altDown = m_altDown;
+    obj->m_controlDown = m_controlDown;
+    obj->m_shiftDown = m_shiftDown;
+    obj->m_leftDown = m_leftDown;
+    obj->m_rightDown = m_rightDown;
+    obj->m_middleDown = m_middleDown;
+    obj->m_x = m_x;
+    obj->m_y = m_y;
+}
+

 // True if was a button dclick event (1 = left, 2 = middle, 3 = right)
 // or any button dclick event (but = -1)
 bool wxMouseEvent::ButtonDClick(int but) const
 // True if was a button dclick event (1 = left, 2 = middle, 3 = right)
 // or any button dclick event (but = -1)
 bool wxMouseEvent::ButtonDClick(int but) const


@@ -163,7 +231,7 @@ bool wxMouseEvent::ButtonDClick(int but) const
         case 3:
             return RightDClick();
         default:
         case 3:
             return RightDClick();
         default:

-            wxFAIL_MSG("invalid parameter in wxMouseEvent::ButtonDClick");
+            wxFAIL_MSG(_T("invalid parameter in wxMouseEvent::ButtonDClick"));

     }
 
     return FALSE;
     }
 
     return FALSE;


@@ -184,7 +252,7 @@ bool wxMouseEvent::ButtonDown(int but) const
         case 3:
             return RightDown();
         default:
         case 3:
             return RightDown();
         default:

-            wxFAIL_MSG("invalid parameter in wxMouseEvent::ButtonDown");
+            wxFAIL_MSG(_T("invalid parameter in wxMouseEvent::ButtonDown"));

     }
 
     return FALSE;
     }
 
     return FALSE;


@@ -204,7 +272,7 @@ bool wxMouseEvent::ButtonUp(int but) const
         case 3:
             return RightUp();
         default:
         case 3:
             return RightUp();
         default:

-            wxFAIL_MSG("invalid parameter in wxMouseEvent::ButtonUp");
+            wxFAIL_MSG(_T("invalid parameter in wxMouseEvent::ButtonUp"));

     }
 
     return FALSE;
     }
 
     return FALSE;


@@ -223,7 +291,7 @@ bool wxMouseEvent::Button(int but) const
         case 3:
             return (RightDown() || RightUp() || RightDClick());
         default:
         case 3:
             return (RightDown() || RightUp() || RightDClick());
         default:

-            wxFAIL_MSG("invalid parameter in wxMouseEvent::Button");
+            wxFAIL_MSG(_T("invalid parameter in wxMouseEvent::Button"));

     }
 
     return FALSE;
     }
 
     return FALSE;


@@ -241,7 +309,7 @@ bool wxMouseEvent::ButtonIsDown(int but) const
         case 3:
             return RightIsDown();
         default:
         case 3:
             return RightIsDown();
         default:

-            wxFAIL_MSG("invalid parameter in wxMouseEvent::ButtonIsDown");
+            wxFAIL_MSG(_T("invalid parameter in wxMouseEvent::ButtonIsDown"));

     }
 
     return FALSE;
     }
 
     return FALSE;


@@ -268,6 +336,157 @@ wxKeyEvent::wxKeyEvent(wxEventType type)
     m_metaDown = FALSE;
     m_altDown = FALSE;
     m_keyCode = 0;
     m_metaDown = FALSE;
     m_altDown = FALSE;
     m_keyCode = 0;

+    m_scanCode = 0;
+}
+
+void wxKeyEvent::CopyObject(wxObject& obj_d) const
+{
+    wxKeyEvent *obj = (wxKeyEvent *)&obj_d;
+    wxEvent::CopyObject(obj_d);
+
+    obj->m_shiftDown   = m_shiftDown;
+    obj->m_controlDown = m_controlDown;
+    obj->m_metaDown    = m_metaDown;
+    obj->m_altDown     = m_altDown;
+    obj->m_keyCode     = m_keyCode;
+}
+
+
+/*
+ * Misc events
+ */
+
+void wxSizeEvent::CopyObject(wxObject& obj_d) const
+{
+    wxSizeEvent *obj = (wxSizeEvent *)&obj_d;
+    wxEvent::CopyObject(obj_d);
+
+    obj->m_size = m_size;
+}
+
+void wxMoveEvent::CopyObject(wxObject& obj_d) const
+{
+    wxMoveEvent *obj = (wxMoveEvent *)&obj_d;
+    wxEvent::CopyObject(obj_d);
+
+    obj->m_pos = m_pos;
+}
+
+void wxEraseEvent::CopyObject(wxObject& obj_d) const
+{
+    wxEraseEvent *obj = (wxEraseEvent *)&obj_d;
+    wxEvent::CopyObject(obj_d);
+
+    obj->m_dc = m_dc;
+}
+
+void wxActivateEvent::CopyObject(wxObject& obj_d) const
+{
+    wxActivateEvent *obj = (wxActivateEvent *)&obj_d;
+    wxEvent::CopyObject(obj_d);
+
+    obj->m_active = m_active;
+}
+
+void wxMenuEvent::CopyObject(wxObject& obj_d) const
+{
+    wxMenuEvent *obj = (wxMenuEvent *)&obj_d;
+    wxEvent::CopyObject(obj_d);
+
+    obj->m_menuId = m_menuId;
+}
+
+void wxCloseEvent::CopyObject(wxObject& obj_d) const
+{
+    wxCloseEvent *obj = (wxCloseEvent *)&obj_d;
+    wxEvent::CopyObject(obj_d);
+
+    obj->m_loggingOff = m_loggingOff;
+    obj->m_veto = m_veto;
+#if WXWIN_COMPATIBILITY
+    obj->m_force = m_force;
+#endif
+    obj->m_canVeto = m_canVeto;
+}
+ 
+void wxShowEvent::CopyObject(wxObject& obj_d) const
+{
+    wxShowEvent *obj = (wxShowEvent *)&obj_d;
+    wxEvent::CopyObject(obj_d);
+
+    obj->m_show = m_show;
+}
+
+void wxJoystickEvent::CopyObject(wxObject& obj_d) const
+{
+    wxJoystickEvent *obj = (wxJoystickEvent *)&obj_d;
+    wxEvent::CopyObject(obj_d);
+
+    obj->m_pos = m_pos;
+    obj->m_zPosition = m_zPosition;
+    obj->m_buttonChange = m_buttonChange;
+    obj->m_buttonState = m_buttonState;
+    obj->m_joyStick = m_joyStick;
+} 
+
+void wxDropFilesEvent::CopyObject(wxObject& obj_d) const
+{
+    wxDropFilesEvent *obj = (wxDropFilesEvent *)&obj_d;
+    wxEvent::CopyObject(obj_d);
+
+    obj->m_noFiles = m_noFiles;
+    obj->m_pos = m_pos;
+    // TODO: Problem with obj->m_files. It should be deallocated by the
+    // destructor of the event. 
+}
+
+void wxIdleEvent::CopyObject(wxObject& obj_d) const
+{
+    wxIdleEvent *obj = (wxIdleEvent *)&obj_d;
+    wxEvent::CopyObject(obj_d);
+
+    obj->m_requestMore = m_requestMore;
+}
+
+void wxUpdateUIEvent::CopyObject(wxObject &obj_d) const
+{
+    wxUpdateUIEvent *obj = (wxUpdateUIEvent *)&obj_d;
+    wxEvent::CopyObject(obj_d);
+
+    obj->m_checked = m_checked;
+    obj->m_enabled = m_enabled;
+    obj->m_text = m_text;
+    obj->m_setText = m_setText;
+    obj->m_setChecked = m_setChecked;
+    obj->m_setEnabled = m_setEnabled;
+}
+
+void wxPaletteChangedEvent::CopyObject(wxObject &obj_d) const
+{
+    wxPaletteChangedEvent *obj = (wxPaletteChangedEvent *)&obj_d;
+    wxEvent::CopyObject(obj_d);
+
+    obj->m_changedWindow = m_changedWindow;
+}
+
+void wxQueryNewPaletteEvent::CopyObject(wxObject& obj_d) const
+{
+    wxQueryNewPaletteEvent *obj = (wxQueryNewPaletteEvent *)&obj_d;
+    wxEvent::CopyObject(obj_d);
+
+    obj->m_paletteRealized = m_paletteRealized;
+}
+
+wxWindowCreateEvent::wxWindowCreateEvent(wxWindow *win)
+                   : wxEvent(wxEVT_CREATE)
+{
+    SetEventObject(win);
+}
+
+wxWindowDestroyEvent::wxWindowDestroyEvent(wxWindow *win)
+                    : wxEvent(wxEVT_DESTROY)
+{
+    SetEventObject(win);

 }
 
 /*
 }
 
 /*


@@ -280,6 +499,11 @@ wxEvtHandler::wxEvtHandler()
     m_previousHandler = (wxEvtHandler *) NULL;
     m_enabled = TRUE;
     m_dynamicEvents = (wxList *) NULL;
     m_previousHandler = (wxEvtHandler *) NULL;
     m_enabled = TRUE;
     m_dynamicEvents = (wxList *) NULL;

+    m_isWindow = FALSE;
+#if wxUSE_THREADS
+    m_eventsLocker = new wxCriticalSection();
+#endif
+    m_pendingEvents = (wxList *) NULL;

 }
 
 wxEvtHandler::~wxEvtHandler()
 }
 
 wxEvtHandler::~wxEvtHandler()


@@ -303,7 +527,63 @@ wxEvtHandler::~wxEvtHandler()
         }
         delete m_dynamicEvents;
     };
         }
         delete m_dynamicEvents;
     };

+
+#if wxUSE_THREADS
+    if (m_pendingEvents)
+      delete m_pendingEvents;
+
+    delete m_eventsLocker;
+#endif
+}
+
+#if wxUSE_THREADS
+
+#ifdef __WXGTK__
+extern bool g_isIdle;
+extern void wxapp_install_idle_handler();
+#endif
+
+bool wxEvtHandler::ProcessThreadEvent(wxEvent& event)
+{
+    wxEvent *event_main;
+    wxCriticalSectionLocker locker(*m_eventsLocker);
+
+    // check that we are really in a child thread
+    wxASSERT( !wxThread::IsMain() );
+
+    if (m_pendingEvents == NULL)
+      m_pendingEvents = new wxList();
+
+    event_main = (wxEvent *)event.Clone();
+
+    m_pendingEvents->Append(event_main);
+
+    wxPendingEventsLocker->Enter();
+    wxPendingEvents->Append(this);
+    wxPendingEventsLocker->Leave();
+
+#ifdef __WXGTK__
+    if (g_isIdle) 
+        wxapp_install_idle_handler();
+#endif
+
+    return TRUE;
+}
+
+void wxEvtHandler::ProcessPendingEvents()
+{
+    wxCriticalSectionLocker locker(*m_eventsLocker);
+    wxNode *node = m_pendingEvents->First();
+    wxEvent *event;
+
+    while (node != NULL) {
+      event = (wxEvent *)node->Data();
+      ProcessEvent(*event);
+      delete node;
+      node = m_pendingEvents->First();
+    }

 }
 }

+#endif

 
 /*
  * Event table stuff
 
 /*
  * Event table stuff


@@ -311,20 +591,27 @@ wxEvtHandler::~wxEvtHandler()
 
 bool wxEvtHandler::ProcessEvent(wxEvent& event)
 {
 
 bool wxEvtHandler::ProcessEvent(wxEvent& event)
 {

-    bool isWindow = IsKindOf(CLASSINFO(wxWindow));
+    /* check that our flag corresponds to reality */
+    wxASSERT( m_isWindow == IsKindOf(CLASSINFO(wxWindow)) );

 
 

-    // An event handler can be enabled or disabled
+    /* An event handler can be enabled or disabled */

     if ( GetEvtHandlerEnabled() )
     {
     if ( GetEvtHandlerEnabled() )
     {

-        // Handle per-instance dynamic event tables first
+#if wxUSE_THREADS
+       /* Check whether we are in a child thread. */
+        if (!wxThread::IsMain())
+          return ProcessThreadEvent(event);
+#endif
+        /* Handle per-instance dynamic event tables first */

 
 

-        if (SearchDynamicEventTable( event ))
+        if ( m_dynamicEvents && SearchDynamicEventTable(event) )

             return TRUE;
 
             return TRUE;
 

-        // Then static per-class event tables
+        /* Then static per-class event tables */

 
         const wxEventTable *table = GetEventTable();
 
 
         const wxEventTable *table = GetEventTable();
 

+#if wxUSE_VALIDATORS

         // Try the associated validator first, if this is a window.
         // Problem: if the event handler of the window has been replaced,
         // this wxEvtHandler may no longer be a window.
         // Try the associated validator first, if this is a window.
         // Problem: if the event handler of the window has been replaced,
         // this wxEvtHandler may no longer be a window.


@@ -333,24 +620,27 @@ bool wxEvtHandler::ProcessEvent(wxEvent& event)
         // THIS CAN BE CURED if PushEventHandler is used instead of
         // SetEventHandler, and then processing will be passed down the
         // chain of event handlers.
         // THIS CAN BE CURED if PushEventHandler is used instead of
         // SetEventHandler, and then processing will be passed down the
         // chain of event handlers.

-        if ( isWindow )
+        if (m_isWindow)

         {
             wxWindow *win = (wxWindow *)this;
 
             // Can only use the validator of the window which
             // is receiving the event
         {
             wxWindow *win = (wxWindow *)this;
 
             // Can only use the validator of the window which
             // is receiving the event

-            if ( (win == event.GetEventObject()) &&
-                    win->GetValidator() &&
-                    win->GetValidator()->ProcessEvent(event))
+            if ( win == event.GetEventObject() )

             {
             {

-                return TRUE;
+                wxValidator *validator = win->GetValidator();
+                if ( validator && validator->ProcessEvent(event) )
+                {
+                    return TRUE;
+                }

             }
         }
             }
         }

+#endif

 
         // Search upwards through the inheritance hierarchy
         while (table)
         {
 
         // Search upwards through the inheritance hierarchy
         while (table)
         {

-            if (SearchEventTable((wxEventTable&)*table, event))
+            if ( SearchEventTable((wxEventTable&)*table, event) )

                 return TRUE;
             table = table->baseTable;
         }
                 return TRUE;
             table = table->baseTable;
         }


@@ -366,23 +656,25 @@ bool wxEvtHandler::ProcessEvent(wxEvent& event)
     // Carry on up the parent-child hierarchy,
     // but only if event is a command event: it wouldn't
     // make sense for a parent to receive a child's size event, for example
     // Carry on up the parent-child hierarchy,
     // but only if event is a command event: it wouldn't
     // make sense for a parent to receive a child's size event, for example

-    if ( isWindow && event.IsKindOf(CLASSINFO(wxCommandEvent)) )
+    if ( m_isWindow && event.IsCommandEvent() )

     {
         wxWindow *win = (wxWindow *)this;
         wxWindow *parent = win->GetParent();
         if (parent && !parent->IsBeingDeleted())
     {
         wxWindow *win = (wxWindow *)this;
         wxWindow *parent = win->GetParent();
         if (parent && !parent->IsBeingDeleted())

-            return win->GetParent()->GetEventHandler()->ProcessEvent(event);
+            return parent->GetEventHandler()->ProcessEvent(event);

     }
 
     // Last try - application object.
     }
 
     // Last try - application object.

-    // Special case: don't pass wxEVT_IDLE to wxApp, since it'll always swallow
-    // it. wxEVT_IDLE is sent explicitly to wxApp so it will be processed
-    // appropriately via SearchEventTable.
-    if ( wxTheApp && (this != wxTheApp) && (event.GetEventType() != wxEVT_IDLE)
-       )
+    if ( wxTheApp && (this != wxTheApp) )

     {
     {

-        if ( wxTheApp->ProcessEvent(event) )
-            return TRUE;
+        // Special case: don't pass wxEVT_IDLE to wxApp, since it'll always
+        // swallow it. wxEVT_IDLE is sent explicitly to wxApp so it will be
+        // processed appropriately via SearchEventTable.
+        if ( event.GetEventType() != wxEVT_IDLE )
+        {
+            if ( wxTheApp->ProcessEvent(event) )
+                return TRUE;
+        }

     }
 
     return FALSE;
     }
 
     return FALSE;


@@ -421,7 +713,6 @@ bool wxEvtHandler::SearchEventTable(wxEventTable& table, wxEvent& event)
     }
     return FALSE;
 }
     }
     return FALSE;
 }

-

 void wxEvtHandler::Connect( int id, int lastId,
                             wxEventType eventType,
                             wxObjectEventFunction func,
 void wxEvtHandler::Connect( int id, int lastId,
                             wxEventType eventType,
                             wxObjectEventFunction func,


@@ -442,7 +733,8 @@ void wxEvtHandler::Connect( int id, int lastId,
 
 bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
 {
 
 bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
 {

-    if (!m_dynamicEvents) return FALSE;
+    wxCHECK_MSG( m_dynamicEvents, FALSE,
+                 _T("caller should check that we have dynamic events") );

 
     int commandId = event.GetId();
 
 
     int commandId = event.GetId();
 


@@ -476,6 +768,7 @@ bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
     return FALSE;
 };
 
     return FALSE;
 };
 

+#if WXWIN_COMPATIBILITY

 bool wxEvtHandler::OnClose()
 {
     if (GetNextHandler())
 bool wxEvtHandler::OnClose()
 {
     if (GetNextHandler())


@@ -483,3 +776,28 @@ bool wxEvtHandler::OnClose()
     else
         return FALSE;
 }
     else
         return FALSE;
 }

+#endif // WXWIN_COMPATIBILITY
+
+// Find a window with the focus, that is also a descendant of the given window.
+// This is used to determine the window to initially send commands to.
+wxWindow* wxFindFocusDescendant(wxWindow* ancestor)
+{
+    // Process events starting with the window with the focus, if any.
+    wxWindow* focusWin = wxWindow::FindFocus();
+    wxWindow* win = focusWin;
+
+    // Check if this is a descendant of this frame.
+    // If not, win will be set to NULL.
+    while (win)
+    {
+        if (win == ancestor)
+            break;
+        else
+            win = win->GetParent();
+    }
+    if (win == (wxWindow*) NULL)
+        focusWin = (wxWindow*) NULL;
+
+    return focusWin;
+}
+