Enable/disable refresh button in MapViewer when automatic refresh is enabled.

git-svn-id: https://svn.code.sf.net/p/vbam/code/trunk@780 a31d4220-a93d-0410-bf67-fe4944624d44

src/win32/MapView.cpp

@@ -727,6 +727,7 @@ void MapView::OnAutoUpdate()
   } else {
     theApp.winRemoveUpdateListener(this);
   }
+  (CButton*)GetDlgItem(IDC_REFRESH)->EnableWindow(autoUpdate ? FALSE : TRUE);
 }
 
 void MapView::update()