Flex 3.

I would have thought this would simply be an option.

After looking around I have added:
horizontalScrollPolicy="auto"

My code looks like this:

<mx:Canvas x="501" y="0" width="288" height="516" backgroundColor="#E8EEF7">
<mx:TextInput x="10" y="11" width="268" id="sd_channel_filter"/>
<mxataGrid id="dg_channels" x="10" y="41" width="268" height="465"
dataProvider="{channelListFilteredXML.CItem}"
headerRelease="{headerColor(event)}"
horizontalScrollPolicy="auto"
dragEnabled="true"
itemClick="onItemClick(event)"
>
<mx:columns>
<mxataGridColumn headerStyleName="title" width="100"
headerText="CHANNELS" dataField="@Name"/>
</mx:columns>
</mxataGrid>
</mx:Canvas>

The problem is this.
The canvas has 1 TextInput (to filter the datagrid) and the datagrid.

The datagrid has only 1 column which is populated by an HTTPService request.

The data in the column is much wider than what is available in the canvas.
I want a scrollbar to magically appear when the data is added.
If I set:
horizontalScrollPolicy="on"

The scrollbar is there, but it is disabled. Which I think tells me it doesn't
need to scroll (i.e. the contents fit the displayable space), but you can
clearly see the data is cut off and can't read the rest.

All my googling found conditions to get rid of scrollbars, not much to add
them.

Any suggestions?

Thanks,
Dave

Any suggestions on this one?
Was I right and it should have been that simple?
Does it have something to do with the width of the columns?

TIA,
Dave

Have you tried putting the datagrid into another canvas and letting the canvas do the scrolling? Not sure if this would work, but I'm not surprised that datagrid isn't happy doing this itself.