dhtmlxgrid:api_method_dhtmlxgridobject_savehiddencolumnstocookie [Skin test wiki]

saveHiddenColumnsToCookie(name,cookie_param)

Required library edition: This method requires Professional Edition of the DHTMLX library
Required library file: dhtmlxgrid_ssc.js

save hidden columns to cookie

name - optional, cookie name
cookie_param - additional parameters added to cookie

   mygrid.attachEvent("onColumnHidden", function(index,state){
          //minimal parameters set
          mygrid.saveHiddenColumnsToCookie();
          //maximal parameters set
          mygrid.saveHiddenColumnsToCookie("some_name","expires=Fri, 31-Dec-2010 23:59:59 GMT");
   });

See also: enableAutoHiddenColumnsSaving