diff --git a/docs/changes.txt b/docs/changes.txt
index 0ab05c0ac3..415ba2a336 100644
--- a/docs/changes.txt
+++ b/docs/changes.txt
@@ -632,6 +632,8 @@ wxMSW:
 wxOSX:
 
 - Fix incorrect joystick detection in configure (Lauri Nurmi).
+- Add support for wxEVT_COMBOBOX_DROPDOWN and wxEVT_COMBOBOX_CLOSEUP
+  events to wxOSX/Cocoa (Igor Korot).
 
 
 3.0.0: (released 2013-11-11)
diff --git a/interface/wx/combobox.h b/interface/wx/combobox.h
index d3e75c84ab..a23358d2a8 100644
--- a/interface/wx/combobox.h
+++ b/interface/wx/combobox.h
@@ -60,14 +60,14 @@
     @event{EVT_COMBOBOX_DROPDOWN(id, func)}
            Process a @c wxEVT_COMBOBOX_DROPDOWN event, which is generated
            when the list box part of the combo box is shown (drops down).
-           Notice that this event is currently only supported by wxMSW and
-           wxGTK with GTK+ 2.10 or later.
+           Notice that this event is only supported by wxMSW, wxGTK with GTK+
+           2.10 or later, and wxOSX/Cocoa.
     @event{EVT_COMBOBOX_CLOSEUP(id, func)}
            Process a @c wxEVT_COMBOBOX_CLOSEUP event, which is generated
            when the list box of the combo box disappears (closes up). This
            event is only generated for the same platforms as
-           @c wxEVT_COMBOBOX_DROPDOWN above. Also note that only wxMSW
-           supports adding or deleting items in this event.
+           @c wxEVT_COMBOBOX_DROPDOWN above. Also note that only wxMSW and
+           wxOSX/Cocoa support adding or deleting items in this event.
     @endEventTable
 
     @library{wxcore}
diff --git a/src/osx/cocoa/combobox.mm b/src/osx/cocoa/combobox.mm
index 112b37b43e..37e9c5d9fe 100644
--- a/src/osx/cocoa/combobox.mm
+++ b/src/osx/cocoa/combobox.mm
@@ -90,6 +90,38 @@
     }
 }
 
+- (void)comboBoxWillPopUp:(NSNotification *)notification
+{
+    wxUnusedVar(notification);
+    wxWidgetCocoaImpl* impl = (wxWidgetCocoaImpl* ) wxWidgetImpl::FindFromWXWidget( self );
+    if( impl && impl->ShouldSendEvents() )
+    {
+        wxComboBox* wxpeer = static_cast<wxComboBox*>(impl->GetWXPeer());
+        if( wxpeer )
+        {
+            wxCommandEvent event(wxEVT_COMBOBOX_DROPDOWN, wxpeer->GetId());
+            event.SetEventObject( wxpeer );
+            wxpeer->GetEventHandler()->ProcessEvent( event );
+        }
+    }
+}
+
+- (void)comboBoxWillDismiss:(NSNotification *)notification
+{
+    wxUnusedVar(notification);
+    wxWidgetCocoaImpl* impl = (wxWidgetCocoaImpl* ) wxWidgetImpl::FindFromWXWidget( self );
+    if( impl && impl->ShouldSendEvents() )
+    {
+        wxComboBox* wxpeer = static_cast<wxComboBox*>(impl->GetWXPeer());
+        if( wxpeer )
+        {
+            wxCommandEvent event(wxEVT_COMBOBOX_CLOSEUP, wxpeer->GetId());
+            event.SetEventObject( wxpeer );
+            wxpeer->GetEventHandler()->ProcessEvent( event );
+        }
+    }
+}
+
 - (void)comboBoxSelectionDidChange:(NSNotification *)notification
 {
     wxUnusedVar(notification);