Datagrid columns widths

Hi all,

I have an urgent question concerning dataGrid column widhts.

Here is a simplified code:

<?xml version=”1.0″ encoding=”utf-8″?>

<mx:Application xmlns:mx=”http://www.adobe.com/2006/mxml“

    layout=”vertical” minWidth=”955″ minHeight=”600″ >

    <mx:Script>

        <![CDATA[

            import mx.collections.ArrayCollection;

            [Bindable] private var dp:ArrayCollection = new ArrayCollection(

                [

                {id: 1, label: "Item one"},

                {id: 2, label: "Item two"}

                ]);

            public function init():void

            {

            }

        ]]>

    </mx:Script>

    <mx:DataGrid id=”dg” height=”100%” dataProvider=”{dp}”>

        <mx:columns>

            <mx:DataGridColumn headerText=”C1″ width=”200″ dataField=”label”/>

            <mx:DataGridColumn headerText=”C2″>

                <mx:itemRenderer>

                    <mx:Component>

                        <mx:HBox width=”100%” horizontalScrollPolicy=”off”>

                            <mx:Script>

                                <![CDATA[

                                    import mx.controls.CheckBox;

                                    override public function set data(value:Object):void

                                    {

                                        super.data = value;

                                        for (var i:int = 0; i < 5; i++)

                                        {

                                            var cb:CheckBox = new CheckBox();

                                            cb.label = "cb" + i;

                                            contentHolder.addChild(cb);

                                        }

                                    }

                                ]]>

                            </mx:Script>

                            <mx:HBox id=”contentHolder” width=”100%” horizontalScrollPolicy=”off”/>

                        </mx:HBox>

                    </mx:Component>

                </mx:itemRenderer>

            </mx:DataGridColumn>

        </mx:columns>

    </mx:DataGrid>

</mx:Application>

As you can see, within the set data functions, content is added to the itemRenderer. This is done AFTER the datagrid is initialized.

Therefore, the column is not wide enough.

I have two problems now:

1. How can I calculate the widht of the contentHolder HBox?

2. How can I redraw the datagrid’s columns based on this calculated width?

Any help much appreciated.

Dany

|||

Renderers are not measured to determine column width.  You will need to find a way to compute it upfront (or change it later)

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