improved handling of frames with parent: now they have a NULL parent HWND (to

avoid Win32 bugs in handling this situation) but still are iconized/restored
with their parent frame


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@462 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/frame.h

@@ -156,6 +156,9 @@ public:
                    int x, int y, int width, int height, long style);
 
 protected:
+  // propagate our state change to all child frames
+  void IconizeChildFrames(bool bIconize);
+
   wxMenuBar *           m_frameMenuBar;
   wxStatusBar *         m_frameStatusBar;
   wxIcon                m_icon;