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dhmtlx tree grid

I have a grid in which my first column type is tree. I am getting the tree properly but tree column is editable while I want it as non editable field. is it possible

You can try to use onEditCell event handler in order to deny editing in the "tree" column. For example if "tree" is the first column:  

mygrid.attachEvent("onEditCell",function(stage,id,index){

if(index==0) return false /*deny editing*/

return true

})