VC++ warning fixes

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@22306 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/listctrl/listtest.h

@@ -13,7 +13,12 @@
 class MyApp: public wxApp
 {
 public:
+    MyApp() { }
+
     virtual bool OnInit();
+
+private:
+    DECLARE_NO_COPY_CLASS(MyApp)
 };
 
 class MyListCtrl: public wxListCtrl
@@ -66,6 +71,7 @@ private:
 
     wxListItemAttr m_attr;
 
+    DECLARE_NO_COPY_CLASS(MyListCtrl)
     DECLARE_EVENT_TABLE()
 };
 
@@ -127,6 +133,7 @@ private:
 
     wxLog *m_logOld;
 
+    DECLARE_NO_COPY_CLASS(MyFrame)
     DECLARE_EVENT_TABLE()
 };