And to beat a horse that might not be quite dead yet, if the problem IS with the deferred instantiation of the container, then the best solution is as Lach outlines in the first paragraph: update a data model somewhere accessible, then bind the viewstack children's components to that model. Avoid solving the problem using creationPolicy.
Tracy ________________________________ From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Lachlan Cotter Sent: Tuesday, December 05, 2006 6:17 AM To: flexcoders@yahoogroups.com Subject: Re: [flexcoders] Returning values from objects on another canvas Hi, There are a couple of different issues here. First, why do you need to get a reference to the other view? If it is in order to access or manipulate the data therein, the better approach is to bind both views into some dataProvider and manipulate the data through that. Second, the reason you can't address the sub-components at compile time is that they are not part of the canvas class (they are children of your instance). Notwithstanding the above paragraph, if you still need to access them this way, you might want to define your own subclass component with these child properties, so Flex Builder can find them at compile time. Finally, just a guess but perhaps dgselectedOptions is null at runtime because at the time your function is executing, that component has not yet been initialised. Check the creationPolicy of the tab navigator. Cheers, Lach On 05/12/2006, at 5:19 PM, michrx7 wrote: How does one go about referencing objects on another canvas? For example I have a tab navigator with 4 tabs: Register Attendees Membership Payment Options Inside the attendees tab I have a canvas: csAttendee with a datagrid: dgselectedOptions When the user submits the "pay" button on the payment options tab I call a function to validate their input and try and reference the columns array for the datagrid dgselectedOptions. Using csAttendee.dgselectedOptions gives me an error when I try to compile of "Access of possibly undefined property dgselectedOptions through a reference with static type mx.containers:Canvas." If I try Attendees.csAttendee.dgselectedOptions gives me "Access of possibly undefined property csAttendee through a reference with static type mx.containers:Canvas." If I try just dgselectedOptions it compiles, but when I click my payment button it gives: "Cannot access a property or method of a null object reference." Even though I can click on the Attendees tab and the datagrid is there and populated.
