How to hide right click on rows and column header cells ?

Hi,
I'm trying to find the flexmonster option (I suppose general option or grid option) to let me hide the right click option on rows and column header cells ?
On ipad it is a simple clic.
 
In some use case we need to hide any kind of customization (except row/col sorting) and this right click let the user do customization (filter on cell value) 🙁
By the way, option grid.showFilter is of course set to false in our use case.

I can't find the option on the documentation (or maybe I've not seen it).
Or maybe it is an issue your side as I think if showFilter=false, we should not let user filter on a column/row value using right click menu, doesn't it ?

I attach a screenshot.
 
Regards
 
Luc Bonnin