+#if !defined(VTK_XVERSION)
+#define VTK_XVERSION (VTK_MAJOR_VERSION<<16)+(VTK_MINOR_VERSION<<8)+(VTK_BUILD_VERSION)
+#endif
+
+// VTKViewer_UnScaledActor is temporarily replaced with simple vtkTextActor
+// This workaround caused by the bug with disappeared labels of the trihedron
+// reproduced after migration from qt-4.4.3 to qt-4.5.2
+#if (VTK_XVERSION < 0x050200)
+#define IPAL21440
+#endif
+