Some things needed in the base class of OS/2

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@13429 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/toplvcmn.cpp

@@ -134,6 +134,9 @@ void wxTopLevelWindowBase::OnSize(wxSizeEvent& WXUNUSED(event))
             {
                 if ( child )
                 {
+#ifdef __WXPM__
+                    AlterChildPos();
+#endif
                     return;     // it's our second subwindow - nothing to do
                 }
 
@@ -157,6 +160,10 @@ void wxTopLevelWindowBase::OnSize(wxSizeEvent& WXUNUSED(event))
 #endif
 
             child->SetSize(ofs, ofs, clientW - 2*ofs, clientH - 2*ofs);
+#ifdef __WXPM__
+            child->MoveChildren(m_vSwpClient.cy - clientH);
+            ::WinQueryWindowPos(GetHwnd(), &m_vSwpClient);
+#endif
         }
     }
 }