Cured problem introduced by LEAVE/ENTER OnIdle code; bugs in gauge sizing

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@135 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/dcmemory.cpp

@@ -41,6 +41,7 @@ wxMemoryDC::wxMemoryDC(void)
 {
   m_hDC = (WXHDC) ::CreateCompatibleDC(NULL);
   m_ok = (m_hDC != 0);
+  m_bOwnsDC = TRUE;
 
   SetBrush(*wxWHITE_BRUSH);
   SetPen(*wxBLACK_PEN);