Not a direct answer to your question, I know, but...
If your display has only one column, use a List instead of a DataGrid. When I needed to do a variable height renderer, I started with the ListItemRenderer.as code and modified it as needed. That renderer handles row heights very well. The code is very clean, well commented and easy to follow, so take a look. Also, using containers (VBox) in an item renderer is less than ideal, because they are "heavy", and you can have some performance problems if you have a lot of them displayed. ListItemRenderer is seriously optimized. Tracy ________________________________ From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Richard Baker Sent: Tuesday, September 16, 2008 11:16 AM To: [email protected] Subject: [flexcoders] VBox as itemRenderer & recycling issue? Hi I have a DataGrid with 1 column - which is a custom itemRenderer. That's built from an MXML component file containing a VBox and 3 text boxes stacked vertically (obviously!). Each line should be displayed without scrollbars - variableRowHeight is set to true on the datagrid. Problem is, each line's height seems to be set to a seemingly random value. Sometimes it works, sometimes not. I think its to do with itemRenderer recycling, so I am trying to explicitly set the VBox height with a dataChange event handler: private function onDataChange():void { txtQuestion.validateNow(); txtOption.validateNow(); txtFeedback.validateNow(); this.height= txtQuestion.textHeight+txtOption.textHeight+ txtFeedback.textHeight; trace ("ondatachange :" + txtQuestion.text + this.height); } the heights of the text fields (txtQuestion etc) don't seem to be right so I am calling the validateNow to try to get the correct value, but it's not happening for me? Where am I going wrong? Thanks for any help
