the code of the config :
columns: [
{
type : 'check',
//text: "selectionner tout",
showCheckAll : true,
listeners:{
toggle:(source,record,checked)=>{console.log('################'+checked);},
toggleAll:(source,record,checked)=>{console.log('################'+checked);}
}
},
.... }
the checkbox in the header does not appear !! I tried working with selectionMode but it also doesn't work