Various wxCollapsiblePane enhancements (re-patch 1577412):

1. wxUSE_COLLPANE added
2. XRC handler added
3. flicker fixes for the generic version
4. sizing fixes for GTK+ version
5. RTL fixes for the generic version (via wxBoxSizer)
6. better appearance under Mac for the generic version


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@42759 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/xrc/xh_collpane.h

@@ -0,0 +1,36 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        wx/xrc/xh_collpane.h
+// Purpose:     XML resource handler for wxCollapsiblePane
+// Author:      Francesco Montorsi
+// Created:     2006-10-27
+// RCS-ID:      $Id$
+// Copyright:   (c) 2006 Francesco Montorsi
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_XH_COLLPANE_H_
+#define _WX_XH_COLLPANE_H_
+
+#include "wx/xrc/xmlres.h"
+
+#if wxUSE_XRC && wxUSE_COLLPANE
+
+class WXDLLEXPORT wxCollapsiblePane;
+
+class WXDLLIMPEXP_XRC wxCollapsiblePaneXmlHandler : public wxXmlResourceHandler
+{
+    DECLARE_DYNAMIC_CLASS(wxCollapsiblePaneXmlHandler)
+
+public:
+    wxCollapsiblePaneXmlHandler();
+    virtual wxObject *DoCreateResource();
+    virtual bool CanHandle(wxXmlNode *node);
+
+private:
+    bool m_isInside;
+    wxCollapsiblePane *m_collpane;
+};
+
+#endif // wxUSE_XRC && wxUSE_COLLPANE
+
+#endif // _WX_XH_COLLPANE_H_