Extjs 4 checkcolumn not visible

Question

I have a an Grid with a column that must be a checkcolumn, i use this code there are two rows in the grid but the checkcolumn looks empty. When i click on the checkcolumn the console.log returns correctly the changed boolean. But i see nothing in that column.

xtype: 'checkcolumn',
header: 'REDACTEUR',
dataIndex: 'REDACTEUR',
width: 75,
editor: {
xtype: 'checkbox'                            
},
renderer : function(value) {
console.log(value);

Answer 1

you have to manually include the css for the checkcolumn xtype like this:<link rel="stylesheet" type="text/css" href="/extjs4/examples/ux/css/CheckHeader.css">