add combobox drop down/close up events (closes #10587)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@59603 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/combobox.cpp

@@ -342,8 +342,19 @@ bool wxComboBox::MSWCommand(WXUINT param, WXWORD id)
                 // down is cancelled (see #8474)
                 m_lastAcceptedSelection = wxID_NONE;
             }
+            {
+                wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_DROPDOWN, GetId());
+                event.SetEventObject(this);
+                ProcessCommand(event);
+            }
+            break;
+        case CBN_CLOSEUP:
+            {
+                wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_CLOSEUP, GetId());
+                event.SetEventObject(this);
+                ProcessCommand(event);
+            }
             break;
-
         case CBN_SELENDOK:
 #ifndef __SMARTPHONE__
             // we need to reset this to prevent the selection from being undone