Implemented OnParentEnable to allow widgets to reset their colours

after a wxWindow::Enable call


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@10193 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk/textctrl.h

@@ -143,6 +143,11 @@ public:
 
     void SetModified() { m_modified = TRUE; }
 
+    // wxGTK-specific: called recursively by Enable,
+    // to give widgets an oppprtunity to correct their colours after they
+    // have been changed by Enable
+    virtual void OnParentEnable( bool enable ) ;
+
 protected:
     virtual wxSize DoGetBestSize() const;