wpF布局容器添加滚动条

把布局容器添加到ScrollViewer中，可以实现布局容器滚动的效果：代码如下：

Canvas tCanvas = new Canvas;        
m_ScrollViewer.VerticalScrollBarVisibility = ScrollBarVisibility.Disabled;
m_ScrollViewer.HorizontalScrollBarVisibility = ScrollBarVisibility.Visible;
m_ScrollViewer.Width = 150;
m_ScrollViewer.Height = tHeight;
m_ScrollViewer.Content = tCanvas;