fixes as per http://thread.gmane.org/gmane.comp.lib.wxwidgets.devel/92325

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@49114 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/mdi/mdi.cpp

@@ -516,8 +516,13 @@ void MyChild::OnPaste(wxCommandEvent& WXUNUSED(event))
 {
     wxClipboardLocker lock;
     wxTextDataObject data;
-    canvas->SetText(wxTheClipboard->GetData(data) ? data.GetText().c_str()
-                                                  : _T("No text on clipboard"));
+    canvas->SetText(
+        (
+            wxTheClipboard->GetData(data) ? 
+            data.GetText() : 
+            wxString("No text on clipboard")
+        ).c_str()
+    );
 }
 
 void MyChild::OnUpdatePaste(wxUpdateUIEvent& event)