]> git.saurik.com Git - wxWidgets.git/blobdiff - src/common/event.cpp
key handling
[wxWidgets.git] / src / common / event.cpp
index 061d991d7a4624ef1c7852b368f448ff15705a54..6265f0c7de7477a0750f96b43956c242c74e6700 100644 (file)
@@ -52,9 +52,9 @@
 
 IMPLEMENT_DYNAMIC_CLASS(wxEvtHandler, wxObject)
 IMPLEMENT_ABSTRACT_CLASS(wxEvent, wxObject)
-IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)
 
 #if wxUSE_GUI
+    IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent)
@@ -63,9 +63,11 @@ IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxKeyEvent, wxEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxSizeEvent, wxEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxPaintEvent, wxEvent)
+    IMPLEMENT_DYNAMIC_CLASS(wxNcPaintEvent, wxEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxEraseEvent, wxEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxMoveEvent, wxEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxFocusEvent, wxEvent)
+    IMPLEMENT_DYNAMIC_CLASS(wxChildFocusEvent, wxCommandEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxCloseEvent, wxEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxShowEvent, wxEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxMaximizeEvent, wxEvent)
@@ -75,7 +77,9 @@ IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxDropFilesEvent, wxEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxActivateEvent, wxEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxInitDialogEvent, wxEvent)
+    IMPLEMENT_DYNAMIC_CLASS(wxSetCursorEvent, wxEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxSysColourChangedEvent, wxEvent)
+    IMPLEMENT_DYNAMIC_CLASS(wxDisplayChangedEvent, wxEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxUpdateUIEvent, wxCommandEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxNavigationKeyEvent, wxCommandEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxPaletteChangedEvent, wxEvent)
@@ -84,6 +88,7 @@ IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxWindowDestroyEvent, wxEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxHelpEvent, wxCommandEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxContextMenuEvent, wxCommandEvent)
+    IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureChangedEvent, wxEvent)
 #endif // wxUSE_GUI
 
 const wxEventTable *wxEvtHandler::GetEventTable() const
@@ -119,8 +124,6 @@ DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHOICE_SELECTED)
 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_SELECTED)
 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_DOUBLECLICKED)
 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKLISTBOX_TOGGLED)
-DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_UPDATED)
-DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_ENTER)
 DEFINE_EVENT_TYPE(wxEVT_COMMAND_MENU_SELECTED)
 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SLIDER_UPDATED)
 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBOX_SELECTED)
@@ -151,6 +154,7 @@ DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DCLICK)
 DEFINE_EVENT_TYPE(wxEVT_RIGHT_DCLICK)
 DEFINE_EVENT_TYPE(wxEVT_SET_FOCUS)
 DEFINE_EVENT_TYPE(wxEVT_KILL_FOCUS)
+DEFINE_EVENT_TYPE(wxEVT_CHILD_FOCUS)
 DEFINE_EVENT_TYPE(wxEVT_MOUSEWHEEL)
 
 // Non-client mouse events
@@ -216,12 +220,12 @@ DEFINE_EVENT_TYPE(wxEVT_PAINT)
 DEFINE_EVENT_TYPE(wxEVT_ERASE_BACKGROUND)
 DEFINE_EVENT_TYPE(wxEVT_NC_PAINT)
 DEFINE_EVENT_TYPE(wxEVT_PAINT_ICON)
-DEFINE_EVENT_TYPE(wxEVT_MENU_CHAR)
-DEFINE_EVENT_TYPE(wxEVT_MENU_INIT)
+DEFINE_EVENT_TYPE(wxEVT_MENU_OPEN)
+DEFINE_EVENT_TYPE(wxEVT_MENU_CLOSE)
 DEFINE_EVENT_TYPE(wxEVT_MENU_HIGHLIGHT)
-DEFINE_EVENT_TYPE(wxEVT_POPUP_MENU_INIT)
 DEFINE_EVENT_TYPE(wxEVT_CONTEXT_MENU)
 DEFINE_EVENT_TYPE(wxEVT_SYS_COLOUR_CHANGED)
+DEFINE_EVENT_TYPE(wxEVT_DISPLAY_CHANGED)
 DEFINE_EVENT_TYPE(wxEVT_SETTING_CHANGED)
 DEFINE_EVENT_TYPE(wxEVT_QUERY_NEW_PALETTE)
 DEFINE_EVENT_TYPE(wxEVT_PALETTE_CHANGED)
@@ -292,9 +296,9 @@ int wxNewEventType()
  *
  */
 
-wxEvent::wxEvent(int theId)
+wxEvent::wxEvent(int theId, wxEventType commandType )
 {
-    m_eventType = wxEVT_NULL;
+    m_eventType = commandType;
     m_eventObject = (wxObject *) NULL;
     m_timeStamp = 0;
     m_id = theId;
@@ -303,18 +307,16 @@ wxEvent::wxEvent(int theId)
     m_isCommandEvent = FALSE;
 }
 
-void wxEvent::CopyObject(wxObject& object_dest) const
+wxEvent::wxEvent(const wxEvent &src)
+    : wxObject()
+    , m_eventObject(src.m_eventObject)
+    , m_eventType(src.m_eventType)
+    , m_timeStamp(src.m_timeStamp)
+    , m_id(src.m_id)
+    , m_callbackUserData(src.m_callbackUserData)
+    , m_skipped(src.m_skipped)
+    , m_isCommandEvent(src.m_isCommandEvent)
 {
-    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;
 }
 
 #if wxUSE_GUI
@@ -325,43 +327,16 @@ void wxEvent::CopyObject(wxObject& object_dest) const
  */
 
 wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId)
+  : wxEvent(theId, commandType)
 {
-    m_eventType = commandType;
     m_clientData = (char *) NULL;
     m_clientObject = (wxClientData *) NULL;
     m_extraLong = 0;
     m_commandInt = 0;
-    m_id = theId;
     m_commandString = wxEmptyString;
     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;
-    obj->m_commandString = m_commandString;
-}
-
-/*
- * Notify events
- */
-
-void wxNotifyEvent::CopyObject(wxObject& obj_d) const
-{
-    wxNotifyEvent *obj = (wxNotifyEvent *)&obj_d;
-
-    wxEvent::CopyObject(obj_d);
-
-    if (!m_bAllow) obj->Veto();
-}
-
 /*
  * Scroll events
  */
@@ -370,7 +345,7 @@ wxScrollEvent::wxScrollEvent(wxEventType commandType,
                              int id,
                              int pos,
                              int orient)
-             : wxCommandEvent(commandType, id)
+    : wxCommandEvent(commandType, id)
 {
     m_extraLong = orient;
     m_commandInt = pos;
@@ -389,16 +364,6 @@ wxScrollWinEvent::wxScrollWinEvent(wxEventType commandType,
     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
  *
@@ -421,23 +386,6 @@ wxMouseEvent::wxMouseEvent(wxEventType commandType)
     m_linesPerAction = 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
@@ -484,7 +432,8 @@ bool wxMouseEvent::ButtonDown(int but) const
 // or any button up event (but = -1)
 bool wxMouseEvent::ButtonUp(int but) const
 {
-    switch (but) {
+    switch (but)
+    {
         case -1:
             return (LeftUp() || MiddleUp() || RightUp());
         case 1:
@@ -503,7 +452,8 @@ bool wxMouseEvent::ButtonUp(int but) const
 // True if the given button is currently changing state
 bool wxMouseEvent::Button(int but) const
 {
-    switch (but) {
+    switch (but)
+    {
         case -1:
             return (ButtonUp(-1) || ButtonDown(-1) || ButtonDClick(-1));
         case 1:
@@ -521,7 +471,8 @@ bool wxMouseEvent::Button(int but) const
 
 bool wxMouseEvent::ButtonIsDown(int but) const
 {
-    switch (but) {
+    switch (but)
+    {
         case -1:
             return (LeftIsDown() || MiddleIsDown() || RightIsDown());
         case 1:
@@ -537,6 +488,19 @@ bool wxMouseEvent::ButtonIsDown(int but) const
     return FALSE;
 }
 
+int wxMouseEvent::GetButton() const
+{
+    for ( int i = 1; i <= 3; i++ )
+    {
+        if ( Button(i) )
+        {
+            return i;
+        }
+    }
+
+    return -1;
+}
+
 // Find the logical position of the event given the DC
 wxPoint wxMouseEvent::GetLogicalPosition(const wxDC& dc) const
 {
@@ -546,7 +510,7 @@ wxPoint wxMouseEvent::GetLogicalPosition(const wxDC& dc) const
 
 
 /*
- * Keyboard events
+ * Keyboard event
  *
  */
 
@@ -561,139 +525,6 @@ wxKeyEvent::wxKeyEvent(wxEventType type)
     m_scanCode = 0;
 }
 
-void wxKeyEvent::CopyObject(wxObject& obj_d) const
-{
-    wxKeyEvent *obj = (wxKeyEvent *)&obj_d;
-    wxEvent::CopyObject(obj_d);
-
-    obj->m_x = m_x;
-    obj->m_y = m_y;
-    obj->m_keyCode = m_keyCode;
-
-    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 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)
 {
@@ -707,16 +538,18 @@ wxWindowDestroyEvent::wxWindowDestroyEvent(wxWindow *win)
     SetEventObject(win);
 }
 
-#endif // wxUSE_GUI
-
-void wxIdleEvent::CopyObject(wxObject& obj_d) const
+wxChildFocusEvent::wxChildFocusEvent(wxWindow *win)
+                 : wxCommandEvent(wxEVT_CHILD_FOCUS)
 {
-    wxIdleEvent *obj = (wxIdleEvent *)&obj_d;
-    wxEvent::CopyObject(obj_d);
-
-    obj->m_requestMore = m_requestMore;
+    SetEventObject(win);
 }
 
+#endif // wxUSE_GUI
+
+// ----------------------------------------------------------------------------
+// wxEvtHandler
+// ----------------------------------------------------------------------------
+
 /*
  * Event handler
  */
@@ -734,6 +567,9 @@ wxEvtHandler::wxEvtHandler()
     m_eventsLocker = new wxCriticalSection;
 #  endif
 #endif
+    // no client data (yet)
+    m_clientData = NULL;
+    m_clientDataType = wxClientData_None;
 }
 
 wxEvtHandler::~wxEvtHandler()
@@ -771,6 +607,10 @@ wxEvtHandler::~wxEvtHandler()
     delete m_eventsLocker;
 #  endif
 #endif
+
+    // we only delete object data, not untyped
+    if ( m_clientDataType == wxClientData_Object )
+        delete m_clientObject;
 }
 
 #if wxUSE_THREADS
@@ -792,6 +632,13 @@ void wxEvtHandler::AddPendingEvent(wxEvent& event)
 {
     // 1) Add event to list of pending events of this event handler
 
+    wxEvent *eventCopy = event.Clone();
+
+    // we must be able to copy the events here so the event class must
+    // implement Clone() properly instead of just providing a NULL stab for it
+    wxCHECK_RET( eventCopy,
+                 _T("events of this type aren't supposed to be posted") );
+
 #if defined(__VISAGECPP__)
     wxENTER_CRIT_SECT( m_eventsLocker);
 #else
@@ -801,9 +648,7 @@ void wxEvtHandler::AddPendingEvent(wxEvent& event)
     if ( !m_pendingEvents )
       m_pendingEvents = new wxList;
 
-    wxEvent *event2 = (wxEvent *)event.Clone();
-
-    m_pendingEvents->Append(event2);
+    m_pendingEvents->Append(eventCopy);
 
 #if defined(__VISAGECPP__)
     wxLEAVE_CRIT_SECT( m_eventsLocker);
@@ -873,10 +718,58 @@ void wxEvtHandler::ProcessPendingEvents()
 bool wxEvtHandler::ProcessEvent(wxEvent& event)
 {
 #if wxUSE_GUI
+
+    // We have to use the actual window or processing events from
+    // wxWindowNative destructor won't work (we don't see the wxWindow class)
+#ifdef __WXDEBUG__
     // check that our flag corresponds to reality
-    wxASSERT( m_isWindow == IsKindOf(CLASSINFO(wxWindow)) );
+    wxClassInfo* info = NULL;
+#ifdef __WXUNIVERSAL__
+#  if defined(__WXMSW__)
+    info = CLASSINFO(wxWindowMSW);
+#  elif defined(__WXGTK__)
+    info = CLASSINFO(wxWindowGTK);
+#  elif defined(__WXX11__)
+    info = CLASSINFO(wxWindowX11);
+#  elif defined(__WXMGL__)
+    info = CLASSINFO(wxWindowMGL);
+#  elif defined(__WXPM__)
+    info = CLASSINFO(wxWindowOS2);
+#  elif defined(__WXMAC__)
+    info = CLASSINFO(wxWindowMac);
+#  elif defined(__WXMOTIF__)
+    info = CLASSINFO(wxWindowMotif);
+#  endif
+#else
+    info = CLASSINFO(wxWindow);
+#endif
+
+    if ( m_isWindow != IsKindOf(info) )
+    {
+        wxString msg = GetClassInfo()->GetClassName();
+        msg += _T(" should [not] be a window but it is [not]");
+
+        wxFAIL_MSG( msg );
+    }
+
+#endif // __WXDEBUG__
+
 #endif // wxUSE_GUI
 
+    // allow the application to hook into event processing
+    if ( wxTheApp )
+    {
+        int rc = wxTheApp->FilterEvent(event);
+        if ( rc != -1 )
+        {
+            wxASSERT_MSG( rc == 1 || rc == 0,
+                          _T("unexpected wxApp::FilterEvent return value") );
+
+            return rc != 0;
+        }
+        //else: proceed normally
+    }
+
     // An event handler can be enabled or disabled
     if ( GetEvtHandlerEnabled() )
     {
@@ -943,15 +836,23 @@ bool wxEvtHandler::ProcessEvent(wxEvent& event)
     }
 
 #if wxUSE_GUI
-    // 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 ( m_isWindow && event.IsCommandEvent() )
     {
         wxWindow *win = (wxWindow *)this;
-        wxWindow *parent = win->GetParent();
-        if (parent && !parent->IsBeingDeleted())
-            return parent->GetEventHandler()->ProcessEvent(event);
+
+        // honour the requests to stop propagation at this window: this is
+        // used by the dialogs, for example, to prevent processing the events
+        // from the dialog controls in the parent frame which rarely, if ever,
+        // makes sense
+        if ( !(win->GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
+        {
+            wxWindow *parent = win->GetParent();
+            if ( parent && !parent->IsBeingDeleted() )
+                return parent->GetEventHandler()->ProcessEvent(event);
+        }
     }
 #endif // wxUSE_GUI
 
@@ -1112,6 +1013,48 @@ bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
     return FALSE;
 };
 
+void wxEvtHandler::DoSetClientObject( wxClientData *data )
+{
+    wxASSERT_MSG( m_clientDataType != wxClientData_Void,
+                  wxT("can't have both object and void client data") );
+
+    if ( m_clientObject )
+        delete m_clientObject;
+
+    m_clientObject = data;
+    m_clientDataType = wxClientData_Object;
+}
+
+wxClientData *wxEvtHandler::DoGetClientObject() const
+{
+    // it's not an error to call GetClientObject() on a window which doesn't
+    // have client data at all - NULL will be returned
+    wxASSERT_MSG( m_clientDataType != wxClientData_Void,
+                  wxT("this window doesn't have object client data") );
+
+    return m_clientObject;
+}
+
+void wxEvtHandler::DoSetClientData( void *data )
+{
+    wxASSERT_MSG( m_clientDataType != wxClientData_Object,
+                  wxT("can't have both object and void client data") );
+
+    m_clientData = data;
+    m_clientDataType = wxClientData_Void;
+}
+
+void *wxEvtHandler::DoGetClientData() const
+{
+    // it's not an error to call GetClientData() on a window which doesn't have
+    // client data at all - NULL will be returned
+    wxASSERT_MSG( m_clientDataType != wxClientData_Object,
+                  wxT("this window doesn't have void client data") );
+
+    return m_clientData;
+}
+
+
 #if WXWIN_COMPATIBILITY
 bool wxEvtHandler::OnClose()
 {