I did it custom (without using the one with jqxwidgets). The only thing is, you cannot use the . Use an image with state checked / unchecked.
It’s kinda a pain in the ass because you have to program oncolumnclick for check all to change the state and then use cellclick, rowclick / rowselect for all the checking / unchecking of the rows.
Try to do it with the grid’s demo.
If you really need to use custom like i did, i will try to help you then.
But it’s a bit of a pain…