Re: [flexcoders] How to properly subclass a component using mxml

[JesterXL]

A few things.  First, to subclass anything, it needs to be the top tag.  So, to subclass the datagrid, it'd be:   <?xml version="1.0" encoding="utf-8"?> <mx:DataGrid xmlns:mx="http://www.adobe.com/2006/mxml">   </mx:DataGrid>   Secondly, say you save that file to "BetterDataGrid.mxml" in com.yourpackage.  To extend that, you'd go:   <?xml version="1.0" encoding="utf-8"?> <view:BetterDataGrid xmlns:view="com.yourpackage.*"> </view:BetterDataGrid>   If you want to use your BetterDataGrid, you'd go:   <view:BetterDataGrid xmlns:view="com.yourpackage.*" />   Make sense?   ----- Original Message ----- From: hank williams To: flexcoders@yahoogroups.com Sent: Thursday, July 06, 2006 12:07 PM Subject: Re: [flexcoders] How to properly subclass a component using mxml Nope there are no children. Also, the specific error message is "could not resolve <mx:columns> to a component implementation." It provides the same error message when trying to add a dataprovider too. Hank On 7/6/06, Tobias Patton <[EMAIL PROTECTED]> wrote: This is just a shot in the dark:   Does your subclass of DataGrid have any children defined? I've never come across this myself, but I've read in various places that if a component has children in its definition, it's not possible to add children when instantiating it.   Tobias.   From: flexcoders@yahoogroups.com [mailto:flexcoders@yahoogroups.com] On Behalf Of hank williams Sent: Thursday, July 06, 2006 7:50 AM To: flexcoders@yahoogroups.com Subject: [flexcoders] How to properly subclass a component using mxml   I want to create a subclass of DataGrid. So far what I have done is to create a new MXML component that is based on DataGrid. The problem is that if I try to use the new component as if it was a dataGrid, certain things dont work. For example: <myComp:BetterDataGrid>      <mx:columns>             <mx:DataGridColumn headerText="Song Name" dataField="label"/>             <mx:DataGridColumn headerText="Artist" dataField="label"/>     </mx:columns> </myComp:BetterDataGrid> in the above example, it doesnt like me using the columns construct to define the columns. In order to define columns in this way I need to put then in the actual BetterDataGrid component as opposed to in this instance. This makes it doggone hard to use BetterDataGrid as a generic "better dataGrid" since I cannot define its behavior on an instance by instance basis. I am sure what I am doing wrong here is simple, but I dont know what. Any insight appreciated. Hank __._,_.___ -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com SPONSORED LINKS Web site design development Computer software development Software design and development Macromedia flex Software development best practice YAHOO! GROUPS LINKS  Visit your group "flexcoders" on the web.    To unsubscribe from this group, send an email to:  [EMAIL PROTECTED]    Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. __,_._,___