In my previous article of this series I wrote about the properties that you have to set when you want to drag and drop between two lists. There were 3 properties, dragEnabled which allows you to copy items from this list to another, dragMoveEnabled which allows you to move items from this list to another, and dropEnabled which allow you to add items to the list via drag and drop. However, there is more to it than just the properties.

There was a presentation a while ago talking about the different frameworks in Flex. The presenters speak ill of Cairngorm's use of Singletons (It's about 20 minutes in, but I strongly recommend watching the whole thing if you haven't seen it yet). I thought it would be a worthy discussion to discuss the complaints with Singletons, how they relate to Cairngorm, and how I deal with this when building Cairngorm applications. What is a Singleton Singleton is a design pattern.

I've spoken about this in other avenues, but I think this is my first blog post on the topic. DotComIt is working on a line of commercial Flex Components, and we'd like to get some feedback from the developer community. In order to do this, we will be conducting some focus groups over the course of the next few months and want to welcome all Flex developers to participate. What is a focus group?

This is my first post in a series of posts about dragging and dropping between lists. I recently was reminded at how hard it is to get get your head around all the different properties (and events, styles, etc.. ) that can go onto a single Flex component. Ryan's post about this on Flex Coder's recently. He was asking how to copy an item from one List component to another using drag and drop. Today, I'm going to do a brain dump about the drag and drop features on lists.

A question came up over on the Apollo Coders group about how to access command line arguments in an AIR application. I know that there are other explanations + documentation out there on this topic, but I thought I'd regurgitate what I have learned. In Flex Bulder create an AIR application. I named mine "CommandLine", and the CommandLine.mxml looked like this: It's an empty app that does nothing, as expected when it is first created.

Someone just asked me how to create a link to a file inside a Flex data grid. This isn't so hard. Here is his question: hi i would like to upload pdf and word docs to a folder on my server and i would like to link to them from a flex datagrid. how can i do that. Thanks am using coldfusion and flex 2. The reader didn't specify how he was uploading documents, either from Flex or from an HTML page to ColdFusion.

This question comes in from a client who wanted to know if he could run a function in a swf movie when the browser was closed. This week I'm actually working on JavaScript Flex integration for a project, so I can kill two birds with one stone. This is his actual [edited] question: Is there a way to call specific functionality when a Flex application is being unloaded (on exit)? The application in question was integrating with Omniture's Flash tracking suite to track video playback.

I just got the chance to upgrade from Flex Builder 3 Beta 3 to Flex Builder 3 Gold and along the way I also upgraded an application from AIR AIR 1.0 . My upgrade this time was very smooth. First, as always I strongly recommend reading the release notes all the way through. Do it twice. The Adobe Partner portal only has the stand alone version, so it took a little searching to find the plug in version. I'm not sure why plug in and stand alone are not on the same page of the public site.

The 360Flex have posted the results of session surveys. Here are mine. Based on a few other speakers I spoke to, I got a lot of responses (20 once you discount the joke review I filled out for my own session). I thought my session went great, and was in a room with 40-50 people or so. I felt I was able to facilitate a discussion with my attendees (as opposed to just lecturing them), which is what I aim for.

This questions comes in from a reader, Rin. I'm pretty adept in ColdFusion, and have recently picked up a passion for Flex. I've been able to successfully use the remote objects and write my own classes (w00t)... However, I came across something last night that has me stumped. I have a datagrid in Flex. getPodcasts fires off to my CFC, and I saw all of my data (w00t!)... Excellent, I thought to myself. However, there was one problem. My Primary key 'ID' was showing up on the grid.