added and documented wxKeyEvent::GetUnicodeKey(); made it work for MSW; added test for it to the text sample

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@28030 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/window.cpp

@@ -4522,6 +4522,9 @@ wxKeyEvent wxWindowMSW::CreateKeyEvent(wxEventType evType,
 
     event.m_eventObject = (wxWindow *)this; // const_cast
     event.m_keyCode = id;
+#if wxUSE_UNICODE
+    event.m_uniChar = wParam;
+#endif
     event.m_rawCode = (wxUint32) wParam;
     event.m_rawFlags = (wxUint32) lParam;
 #ifndef __WXWINCE__