I guess because you set the customCursor in the array position. And array positions can be set to any index, and for that matter it can't be out of range.
stage.addChildAt(customCursor, 100); will try to put the child at index hundred. Eventually the displayList notices a empty index and will shuffle everything in place so there is never an empty indexed location. The same as when you remove a child for the displayList. I am not completely sure if this is the correct technical description, but from what I have read about the displayList, it figures. Kind regards Cor -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Keith Reinfeld Sent: vrijdag 14 november 2008 20:11 To: 'Flash Coders List' Subject: RE: [Flashcoders] ComboBox + Custom Cursor , AS3 Hi Cor, Right. I know all that. The question is why doesn't stage.addChildAt(customCursor, stage.numChildren); trigger a RangeError? Regards, -Keith http://keithreinfeld.home.comcast.net > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:flashcoders- > [EMAIL PROTECTED] On Behalf Of Cor > Sent: Friday, November 14, 2008 12:38 PM > To: 'Flash Coders List' > Subject: RE: [Flashcoders] ComboBox + Custom Cursor , AS3 > > It is not a bug. > The displayList stores it objects in a Array, wich starts at 0. > So Array["obj1","obj2","obj3","obj4"] has 4 children wich are located at > position 0, 1, 2, 3. > If you remove a child every other moves up 1 place. > > So stage.numChildren is accordingly out of range. > > HTH > C > > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Keith > Reinfeld > Sent: vrijdag 14 november 2008 18:57 > To: 'Flash Coders List' > Subject: RE: [Flashcoders] ComboBox + Custom Cursor , AS3 > > Joel, > > Another good optimization point, Joel. If we assume that Karim's custom > cursor is already a child of the stage, then setChildIndex() should be > more > efficient. So I guess it depends on the implementation. > > Interestingly, > > I get a RangeError with this: > > stage.setChildIndex(customCursor, stage.numChildren); > > but this works: > > stage.setChildIndex(customCursor, stage.numChildren - 1); > > However, > > stage.addChildAt(customCursor, stage.numChildren); > > does not trigger the RangeError, and > > stage.addChildAt(customCursor, stage.numChildren - 1); > > still produces the desired result. > > If this is a bug then 'stage.numChildren - 1' would be the safe way to go. > > Regards, > > -Keith > http://keithreinfeld.home.comcast.net > > > > > -----Original Message----- > > From: [EMAIL PROTECTED] [mailto:flashcoders- > > [EMAIL PROTECTED] On Behalf Of Joel Stransky > > Sent: Friday, November 14, 2008 10:25 AM > > To: Flash Coders List > > Subject: Re: [Flashcoders] ComboBox + Custom Cursor , AS3 > > > > Very nice Keith. Wouldn't setChildIndex() work as well? Or is > addChildAt() > > better for ensuring that the cursor is added to the display list? > > > > On Fri, Nov 14, 2008 at 11:08 AM, Keith Reinfeld > > <[EMAIL PROTECTED]>wrote: > > > > > _______________________________________________ > Flashcoders mailing list > Flashcoders@chattyfig.figleaf.com > http://chattyfig.figleaf.com/mailman/listinfo/flashcoders > No virus found in this incoming message. > Checked by AVG - http://www.avg.com > Version: 8.0.175 / Virus Database: 270.9.3/1788 - Release Date: 14-11-2008 > 13:36 > > _______________________________________________ > Flashcoders mailing list > Flashcoders@chattyfig.figleaf.com > http://chattyfig.figleaf.com/mailman/listinfo/flashcoders _______________________________________________ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders No virus found in this incoming message. Checked by AVG - http://www.avg.com Version: 8.0.175 / Virus Database: 270.9.3/1788 - Release Date: 14-11-2008 13:36 _______________________________________________ Flashcoders mailing list Flashcoders@chattyfig.figleaf.com http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
