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ExtJS extensible propertygrid columns?

I want users to be able to resize the Value column of my property grid, but no luck with the settings. Tried all kinds of grid column properties that came to my mind, like:

fixed: false,
resizable: true

- they do not work. Googled, but did not find anything related to my problem. I can only change it programmatically with this code in a listener:

this.columns[0].setWidth(160);
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2 answers

enableColumnResize: true, , , . , true, , . , Ext, Sencha forums, .

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. :

Ext.require('Ext.grid.property.HeaderContainer', function(){
    Ext.override(Ext.grid.property.HeaderContainer, {
        constructor: function() {
            //enable resizing
            this.enableColumnResize = true;
            this.callParent(arguments);
        }
    });
});
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