Use wxTE_RICH style for the log window in the text sample.

This makes it have nicer colour (white instead of grey by default) under MSW
and wxTE_RICH was already in the code, just commented out -- it seems it's
better to enable it (as it also allows more text to be shown in the control
under old Windows versions) than to remove it.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@62719 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/text/text.cpp

@@ -1031,7 +1031,7 @@ MyPanel::MyPanel( wxFrame *frame, int x, int y, int w, int h )
 #if wxUSE_LOG
     m_log = new wxTextCtrl( this, wxID_ANY, wxT("This is the log window.\n"),
                             wxPoint(5,260), wxSize(630,100),
-                            wxTE_MULTILINE | wxTE_READONLY /* | wxTE_RICH */);
+                            wxTE_MULTILINE | wxTE_READONLY | wxTE_RICH);
 
     m_logOld = wxLog::SetActiveTarget( new wxLogTextCtrl( m_log ) );
 #endif // wxUSE_LOG