Fix issue of events for setting cursor of treeview. - comp_dock_base.refresh() would set cursor, it cause an event. But, we don't want it. - The reason of the issue is that MBScene.show() is not monitored. So, we monitor it by move its body to do_show().

madbutterfly for Debian
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<possible notes regarding this package - if none, delete this file>

 -- Ben Lau <benlau@visionware.com.hk>  Thu, 09 Apr 2009 20:00:10 +0800