move m_sizeSet out of wxWindow

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@46126 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk/toplevel.h

@@ -103,6 +103,8 @@ public:
     long          m_gdkFunc,
                   m_gdkDecor;
 
+    bool m_sizeSet;
+
     // private gtk_timeout_add result for mimicing wxUSER_ATTENTION_INFO and
     // wxUSER_ATTENTION_ERROR difference, -2 for no hint, -1 for ERROR hint, rest for GtkTimeout handle.
     int m_urgency_hint;
@@ -116,6 +118,8 @@ public:
     // return the full size of the window without WM decorations
     void GTKDoGetSize(int *width, int *height) const;
 
+    void GtkUpdateSize() { m_sizeSet = false; }
+
 protected:
     // common part of all ctors
     void Init();