Added demo of using a sizer in a wxScrolledWindow

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@15965 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

wxPython/demo/Main.py

@@ -31,6 +31,7 @@ _treeList = [
         'wxGenericDirCtrl',
         'wxImageFromStream',
         'wxArtProvider',
+        'ScrolledPanel',
         ]),
 
     # managed windows == things with a caption you can close
@@ -127,6 +128,7 @@ _treeList = [
         'LayoutAnchors',
         'Layoutf',
         'RowColSizer',
+        'ScrolledPanel',
         'Sizers',
         'wxLayoutConstraints',
         'XML_Resource',
@@ -356,10 +358,13 @@ class wxPythonDemo(wxFrame):
         # But instead of the above we want to show how to use our own wxLog class
         wxLog_SetActiveTarget(MyLog(self.log))
 
-
+        # for serious debugging
+        #wxLog_SetActiveTarget(wxLogStderr())
+        #wxLog_SetTraceMask(wxTraceMessages)
 
         self.Show(true)
 
+
         # add the windows to the splitter and split it.
         splitter2.SplitHorizontally(self.nb, self.log)
         splitter.SplitVertically(self.tree, splitter2)