Fix generation of key events for non-alphabetic keys under Windows.

Don't hardcode the values of VK_OEM_XXX keys which are completely nonsensical
on keyboards with non-US layouts. Use the real unshifted value of the key as
its key code instead -- at least if it's a Latin-1 character. Otherwise, use
WXK_NONE as the key code and pass the character generated by the key as
Unicode character code.

Also generate WXK_NONE events for dead keys to avoid confusing them with the
corresponding normal key events.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@65525 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/listctrl.cpp

@@ -2342,6 +2342,14 @@ bool wxListCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
                         eventType = wxEVT_COMMAND_LIST_KEY_DOWN;
 
                         event.m_code = wxMSWKeyboard::VKToWX(wVKey);
+
+                        if ( event.m_code == WXK_NONE )
+                        {
+                            // We can't translate this to a standard key code,
+                            // until support for Unicode key codes is added to
+                            // wxListEvent we just ignore them.
+                            return false;
+                        }
                     }
 
                     event.m_itemIndex =