how to add Checkbox component to title of ListGrid column "xxx" ?

[xmlspy]

1.component overflow when column's width less than component's width. And make this compoent's VAlign is center in the cell automaticly ?

2.how to add Checkbox component to title of column "xxx" ?

Don't use isomorphic/system/reference/SmartClient_Explorer.html#_Grids_Interaction_Checkbox.Select

Image is here :
http://xmlspy.javaeye.com/blog/785045