implemented ScrollLines/Pages() for all classes in wxGTK, not just wxTextCtrl (patch 1281503)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@37407 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/scrolbar.cpp

@@ -186,6 +186,10 @@ bool wxScrollBar::Create(wxWindow *parent, wxWindowID id,
         m_widget = gtk_hscrollbar_new( (GtkAdjustment *) NULL );
 
     m_adjust = gtk_range_get_adjustment( GTK_RANGE(m_widget) );
+    if ( style & wxSB_VERTICAL )
+    {
+        SetVScrollAdjustment(m_adjust);
+    }
 
     g_signal_connect (m_adjust, "value_changed",
                       G_CALLBACK (gtk_scrollbar_callback), this);