Headers to support 'Y' positioning fixes for OS/2 controls

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@13148 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/os2/window.h

@@ -441,6 +441,8 @@ public:
                         ,WXUINT        uFlags
                        );
 
+    void MoveChildren(int nDiff);
+
 protected:
     // PM can't create some MSW styles natively but can perform these after
     // creation by sending messages
@@ -524,6 +526,8 @@ protected:
     virtual void DoSetToolTip(wxToolTip* pTip);
 #endif // wxUSE_TOOLTIPS
 
+    int  GetOS2ParentHeight(wxWindowOS2* pParent);
+
 private:
     // common part of all ctors
     void Init(void);