Split wxPanel in wxPanelBase and platform-specific files.

So far we have only wxMSW-specific implementation (and also a trivial
wxUniv-specific one) but it's still tidier to have all platform-specific code
in separate files, especially as we're going to have more of it for wxMSW
soon.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@67251 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/univ/panel.h

@@ -0,0 +1,47 @@
+///////////////////////////////////////////////////////////////////////////////
+// Name:        wx/univ/panel.h
+// Purpose:     wxUniversal-specific wxPanel class.
+// Author:      Vadim Zeitlin
+// Created:     2011-03-18
+// RCS-ID:      $Id: wxhead.h,v 1.12 2010-04-22 12:44:51 zeitlin Exp $
+// Copyright:   (c) 2011 Vadim Zeitlin <vadim@wxwidgets.org>
+// Licence:     wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_UNIV_PANEL_H_
+#define _WX_UNIV_PANEL_H_
+
+// ----------------------------------------------------------------------------
+// wxPanel
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_CORE wxPanel : public wxPanelBase
+{
+public:
+    wxPanel() { }
+
+    wxPanel(wxWindow *parent,
+            int x, int y, int width, int height,
+            long style = wxTAB_TRAVERSAL | wxNO_BORDER,
+            const wxString& name = wxPanelNameStr)
+    {
+        Create(parent, wxID_ANY, wxPoint(x, y), wxSize(width, height), style, name);
+    }
+
+    wxPanel(wxWindow *parent,
+            wxWindowID winid = wxID_ANY,
+            const wxPoint& pos = wxDefaultPosition,
+            const wxSize& size = wxDefaultSize,
+            long style = wxTAB_TRAVERSAL | wxNO_BORDER,
+            const wxString& name = wxPanelNameStr)
+    {
+        Create(parent, winid, pos, size, style, name);
+    }
+
+    virtual bool IsCanvasWindow() const { return true; }
+
+private:
+    wxDECLARE_DYNAMIC_CLASS_NO_COPY(wxPanel);
+};
+
+#endif // _WX_UNIV_PANEL_H_