+ // returns true if the window is really enabled and false otherwise,
+ // whether because it had been explicitly disabled itself or because
+ // its parent is currently disabled -- then this method returns false
+ // whatever is the intrinsic state of this window, use IsThisEnabled(0
+ // to retrieve it. In other words, this relation always holds:
+ //
+ // IsEnabled() == IsThisEnabled() && parent.IsEnabled()
+ //
+ bool IsEnabled() const;
+
+ // returns the internal window state independently of the parent(s)
+ // state, i.e. the state in which the window would be if all its
+ // parents were enabled (use IsEnabled() above to get the effective
+ // window state)
+ bool IsThisEnabled() const { return m_isEnabled; }
+
+ // returns true if the window is visible, i.e. IsShown() returns true
+ // if called on it and all its parents up to the first TLW
+ virtual bool IsShownOnScreen() const;