Show the exact wxTextCtrlHitTestResult in the text sample too

In addition to showing the position returned by HitTest(), also show its
return value which is not necessarily wxTE_HT_ON_TEXT if it is not
wxTE_HT_UNKNOWN under MSW.

samples/text/text.cpp

@@ -811,11 +811,32 @@ void MyTextCtrl::OnMouseEvent(wxMouseEvent& ev)
 
         long pos;
         wxTextCtrlHitTestResult rc = HitTest(ev.GetPosition(), &pos);
-        if ( rc != wxTE_HT_UNKNOWN )
+        wxString where;
+        switch ( rc )
         {
-            msg << wxT("at position ") << pos << wxT(' ');
+            case wxTE_HT_UNKNOWN:
+                break;
+
+            case wxTE_HT_BEFORE:
+                where = "before";
+                break;
+
+            case wxTE_HT_ON_TEXT:
+                where = "at";
+                break;
+
+            case wxTE_HT_BELOW:
+                where = "below";
+                break;
+
+            case wxTE_HT_BEYOND:
+                where = "beyond";
+                break;
         }
 
+        if ( !where.empty() )
+            msg << where << " position " << pos << " ";
+
         msg << wxT("[Flags: ")
             << GetChar( ev.LeftIsDown(), wxT('1') )
             << GetChar( ev.MiddleIsDown(), wxT('2') )