Accessing customised columns in a datagrid

Trevor DeVore lists at
Mon Mar 28 21:03:18 EDT 2011

On Mon, Mar 28, 2011 at 12:46 PM, Peter Haworth <pete at>wrote:

> One other quick question for you.  I've customised a column to contain a
> check box.  All works fine but I can't get the checkbox to be centered in
> its column using the justification options in the column inspector.  How can
> I center a check box (it doesn't have a label and I've sized to be just the
> size of the actual checkbox itself).  Can this be done by script/message
> box?

The setting in the column inspector doesn't activate any code. The code for
a default column just looks at the setting for the column being rendered and
positions the text accordingly. If you create a custom column you need to
add that logic yourself.

Two things you can try -

1) Set the lockLoc of your custom column group to true. I can't remember if
this works or not but it may keep your checkbox in the center.

2) If (1) doesn't work then add a "canvas" to your column. This can be a
transparent button or a graphic and you size to fit the width of the column
in LayoutControl. You then position the checkbox in the center of the canvas
and it will appear centered.

Trevor DeVore
Blue Mango Learning Systems
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