//------------------------------------------------------------------------------
+#if (VTK_MAJOR_VERSION == 8 && VTK_MINOR_VERSION >= 2) || VTK_MAJOR_VERSION >= 9
+QVTKOpenGLNativeWidget* vvToolHistogram::GetHistogramWidget()
+#else
QVTKWidget* vvToolHistogram::GetHistogramWidget()
+#endif
{
return(HistogramWidget);
}