Corrected scrollwin thumb release event,

Reenabled horizontal scrolling, cannot currently
    reproduce misbehaviour.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@6637 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/plot/plot.cpp

@@ -121,6 +121,7 @@ MyFrame::MyFrame()
 
     m_plot = new wxPlotWindow( this, -1, wxPoint(0,0), wxSize(100,100), wxSUNKEN_BORDER | wxPLOT_DEFAULT );
     m_plot->SetUnitsPerValue( 0.01 );
+    m_plot->SetScrollOnThumbRelease( TRUE );
 
     m_plot->Add( new MyPlotCurve( 0,  -1.5, 1.5 ) );
     m_plot->Add( new MyPlotCurve( 50, -1.5, 1.5 ) );