extjs 4 treepicker需要点击两次才触发
解决方法参考:
http://www.sencha.com/forum/showthread.php?261043-ExtJS-4.2-TreePicker-needs-doubleclick-to-trigger-2nd-time
解决方法参考:
http://www.sencha.com/forum/showthread.php?261043-ExtJS-4.2-TreePicker-needs-doubleclick-to-trigger-2nd-time