diff --git a/include/wx/dataview.h b/include/wx/dataview.h
index ab4f76b626..d7811f9513 100644
--- a/include/wx/dataview.h
+++ b/include/wx/dataview.h
@@ -560,6 +560,8 @@ BEGIN_DECLARE_EVENT_TYPES()
     DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_ITEM_ACTIVATED, -1)
     DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSED, -1)
     DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDED, -1)
+    DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSING, -1)
+    DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDING, -1)
     DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_COLUMN_HEADER_CLICK, -1)
     DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_COLUMN_HEADER_RIGHT_CLICK, -1)
     DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_ADV, wxEVT_COMMAND_DATAVIEW_COLUMN_SORTED, -1)
@@ -582,7 +584,9 @@ typedef void (wxEvtHandler::*wxDataViewEventFunction)(wxDataViewEvent&);
 #define EVT_DATAVIEW_ITEM_SELECTED(id, fn) wx__DECLARE_DATAVIEWEVT(ITEM_SELECTED, id, fn)
 #define EVT_DATAVIEW_ITEM_DESELECTED(id, fn) wx__DECLARE_DATAVIEWEVT(ITEM_DESELECTED, id, fn)
 #define EVT_DATAVIEW_ITEM_ACTIVATED(id, fn) wx__DECLARE_DATAVIEWEVT(ITEM_ACTIVATED, id, fn)
+#define EVT_DATAVIEW_ITEM_COLLAPSING(id, fn) wx__DECLARE_DATAVIEWEVT(ITEM_COLLAPSING, id, fn)
 #define EVT_DATAVIEW_ITEM_COLLAPSED(id, fn) wx__DECLARE_DATAVIEWEVT(ITEM_COLLAPSED, id, fn)
+#define EVT_DATAVIEW_ITEM_EXPANDING(id, fn) wx__DECLARE_DATAVIEWEVT(ITEM_EXPANDING, id, fn)
 #define EVT_DATAVIEW_ITEM_EXPANDED(id, fn) wx__DECLARE_DATAVIEWEVT(ITEM_EXPANDED, id, fn)
 #define EVT_DATAVIEW_COLUMN_HEADER_CLICK(id, fn) wx__DECLARE_DATAVIEWEVT(COLUMN_HEADER_CLICK, id, fn)
 #define EVT_DATAVIEW_COLUMN_HEADER_RIGHT_CLICKED(id, fn) wx__DECLARE_DATAVIEWEVT(COLUMN_HEADER_RIGHT_CLICK, id, fn)
diff --git a/src/common/datavcmn.cpp b/src/common/datavcmn.cpp
index 61e31e50b2..cfa0149e6a 100644
--- a/src/common/datavcmn.cpp
+++ b/src/common/datavcmn.cpp
@@ -698,7 +698,9 @@ IMPLEMENT_DYNAMIC_CLASS(wxDataViewEvent,wxNotifyEvent)
 DEFINE_EVENT_TYPE(wxEVT_COMMAND_DATAVIEW_ITEM_SELECTED)
 DEFINE_EVENT_TYPE(wxEVT_COMMAND_DATAVIEW_ITEM_DESELECTED)
 DEFINE_EVENT_TYPE(wxEVT_COMMAND_DATAVIEW_ITEM_ACTIVATED)
+DEFINE_EVENT_TYPE(wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSING)
 DEFINE_EVENT_TYPE(wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSED)
+DEFINE_EVENT_TYPE(wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDING)
 DEFINE_EVENT_TYPE(wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDED)
 DEFINE_EVENT_TYPE(wxEVT_COMMAND_DATAVIEW_COLUMN_HEADER_CLICK)
 DEFINE_EVENT_TYPE(wxEVT_COMMAND_DATAVIEW_COLUMN_HEADER_RIGHT_CLICK)