+ double GetOverlayColorWindow();
+ double GetOverlayColorLevel();
+ bool GetLinkOverlayWindowLevel() { return mLinkOverlayWindowLevel; }
+
+ void SetOverlayColorWindow(double s);
+ void SetOverlayColorLevel(double s);
+ void SetLinkOverlayWindowLevel(bool b) { mLinkOverlayWindowLevel = b; }
+
+ /**
+ * When it is enabled, beware of a call to GetExtent.
+ * we must have setted mReducedExtent otherwhise random values
+ * are returned by GetExtent
+ * */