Simple enough. Except that the wrong images were sometimes being displayed, the column had the right data, but the code used to select the image seemed to sometimes pick the wrong image. And what it picked seem to change each time I scrolled the DataGrid up and down!

I actually ran into a very similar issue with a TileList renderer a few weeks ago, but then I had no time to figure out the cause, and so I hacked a workaround. But this time, having been bitten by the same issue twice, I had to find out what was going on.

And what I discovered (by using traces and alerts) is that the creationComplete event does not get fired as I had expected. Rather, it seemed to fire only occasionally, and not once per DataGrid row, and so my image selection function was not being executed as expected.

Once I had figured out the problem I searched the docs for any info on renderers and creationComplete, and found this page. And sure enough, "Flex might reuse an instance of the item renderer or item editor, a reused instance of an item renderer or item editor does not redispatch the creationComplete event". Well, that explained it.

The right way to do what I wanted is to trap the dataChange event instead of creationComplete, as "Flex dispatches the dataChange event every time the data property changes".

And so I am posting this for my own future reference, just to make sure I don't run into it a third time.

But, you actually can force case to be maintained in structures, depending on how structure members are defined. Look at these two examples. The first won't preserve case:

In this example, if the structure were returned to the Flash Player, the members would be named FIRSTNAME and LASTNAME.

Here's another example, one that will indeed preserve case:

This example accomplishes the exact same result as the previous example, in that it creates a structure and defines two members. But in this example, structure member names will be preserved, and they would indeed be named FirstName and LastName when they arrive in the Flash Player.

Hi Ben,

Thanks for your reply on our TIOBE index. I have added an extra question called "Who is Richard Bremner?" to the FAQ of the TIOBE index (see the end of the page). I hope that this answers your question.

Regards,

Paul

Paul, thank you for responding. I still believe that you made a mistake, both in removing ColdFusion from the index, and trusting the input of a single individual and not making the effort to check the facts for yourself. However, I do appreciate you responding to the reactions and feedback of the ColdFusion community.