Turns out this error was occuring because name of the focusManager
variable in the focusOnInput() function was clashing with the
mx.core.UIComponent.focusManager property. So the problem was
resolved by renaming the variable.
--- In flexcoders@yahoogroups.com, "n51red" <[EMAIL PROTECTED]> wrote:
>
> Hello,
>
> After migrating an application from f2b3 to the final release of
Flex
> 2 a new problem has emerged involving the FocusManager.
>
> I use a FocusManager to focus on a TextInput when its parent
becomes
> visible. The text input does indeed take the focus and the
component
> responds to the keyboard without any problems. After this,
however,
> all mouse clicks in the application give the following error:
>
> ArgumentError: Error #2025: The supplied DisplayObject must be a
> child of the caller.
> at flash.display::DisplayObjectContainer/getChildIndex()
> at mx.managers::SystemManager/getChildIndex()
> at mx.managers::SystemManager/::mouseDownHandler()
>
> If I click "continue" in the error dialogue the same thing happens
> when I next click the mouse.
> However, if I click "dismiss all" the problem goes away altogether
> and the application responds to clicks as it should.
>
> After experimenting it appears to be the instantiation of the
> FocusManager instance rather than calling its setFocus method that
> causes the problem.
>
> His is the function I call in response to show events on my
component:
>
> private function focusOnInput():void
> {
> var focusManager:FocusManager=new FocusManager(this);
> focusManager.setFocus(searchTextInput);
> }
>
> Does any one know what's going on here or what I might be able to
do
> about it?
>
> Thanks,
> N51
>
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