Hide editor in EditorGridPanel

[anpegar]

Hi, I want that no appear the editor when the value of a cell is "X", par example.
I try this:
In a render function of a cell I make the following:

function myRenderCell(val,metaData,rec){
if (rec.get('DPP_MAESTRO_DET') == "X"){
return '';
}
}
function escNoEdit(c){
if (vTipoGrid == "D"){
var vGrid = Ext.getCmp('GridDPP');
vGrid.stopEditing(true);
}
}


The first click over the cell don't works, the combobox appear, but in the second click the combobox not appear. Why?

First click:
Img2.jpg


Second click:
Img3.jpg


Code example:

var DPP_BASE = new Ext.ux.Column({
        id: 'DPP_BASE',        
        header: 'Base %',
            dataIndex: 'DPP_BASE',
            sortable: false,
            menuDisabled: true,
            width: 20,
            align: 'right',
            editor: {xtype:'combo',store:st_lvBase, displayField:'valBas',valueField: 'codBas',mode: 'local',typeAhead: false,triggerAction: 'all',lazyRender: true, listeners:{beforeshow : function(c){escNoEdit(c);}}},
            renderer: myRenderCell
    });

[SOLVED]

[anpegar]

Any idea, please?

[anpegar]

Beautiful minds, can help me !!
Thanks.

[anpegar]

I use the method isCellEditable of columnModel.

http://docs.sencha.com/ext-js/3-4/#!...isCellEditable

var cmDPP = new Ext.ux.ColumnModel({
        id: 'cmDPP',        
        isCellEditable: escNoEditable,
        columns: [c1,c2,c3,...,cN]
});  

function escNoEditable(col, row){
  var st = Ext.getCmp('GridDPP').getStore();
  var record = st.getAt(row);
  if (record.data.DPP_MAESTRO_DET == "D"){    
    return false;
  }
  return true;
}