Joao, The trouble here is that you are only evaluating the condition once, when you create the button.
You will need to add a listener to the dataProvider(s) that causes the condition to be reevaluated every time the data changes. As in: btn = ctrlbar.createChild(mx.controls.Button,undefined,{label:label}); someList.dataProvider.addEventListener ('modelChanged', mx.utils.Delegate.create(this, checkButtonEnable)); private function checkButtonEnable():Void { btn.enabled = (somelist.dataProvider.length == 3); } joao_m_fernandes wrote: > > Ali, > > I'm creating a button like this: > <mx:Script> > <![CDATA[ > var btn; > function create_btn_save(label,funct){ > ctrlbar.destroyAllChildren(); > btn = ctrlbar.createChild(mx.controls.Button,undefined,{label:label}); > btn.addEventListener('click',mx.utils.Delegate.create(this,funct)); > btn.enabled = (somelist.dataProvider.length == 3 && > otherlist.dataProvider.length == 3); > } > > ]]> > > I get the button created but the enabled property don't update when > the condition is fullfilled. > > Joćo Fernandes > > --- In flexcoders@yahoogroups.com, "Alistair McLeod" <[EMAIL PROTECTED]> > wrote: > >>Hi, >> >><mx:Button id="myButton"/> >> >>and >> >>Private function setButtonState() : Void >>{ >> myButton.enabled = ( someval == otherval ); >>} >> >> >>Its all in the docs.... >> >>Ali >> >>-- >>Alistair McLeod >>Development Director >>iteration::two >>[EMAIL PROTECTED] >> >>Office: +44 (0)131 338 6108 >> >>This e-mail and any associated attachments transmitted with it may > > contain > >>confidential information and must not be copied, or disclosed, or > > used by > >>anyone other than the intended recipient(s). If you are not the intended >>recipient(s) please destroy this e-mail, and any copies of it, > > immediately. > >> >>Please also note that while software systems have been used to try > > to ensure > >>that this e-mail has been swept for viruses, iteration::two do not > > accept > >>responsibility for any damage or loss caused in respect of any viruses >>transmitted by the e-mail. Please ensure your own checks are carried out >>before any attachments are opened. >> >> >>-----Original Message----- >>From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On >>Behalf Of joao_m_fernandes >>Sent: 19 April 2005 18:06 >>To: flexcoders@yahoogroups.com >>Subject: [flexcoders] setting conditional "enabled" with AS >> >> >> >>Hi there, >> >>This may be a basic question. >> >>I know that if I use <mx:Button enabled="{someval == otherval}"/> My > > button > >>will be enabled whenever someval = otherval is true. >> >>How can I set this kind of conditional values to a button created with >>ActionScript ? >> >>Thanks, >> >>Joćo Fernandes >> >> >> >> >> >> >>Yahoo! Groups Links > > > > > > > > Yahoo! Groups Links > > > > > > > > > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/flexcoders/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/