Why image background is not at center desktop when click fullsceen button

Question

hi. I'm building fullscreen button. and when i click to run fullscreen image it in left not center.
background image in application i make it by skinclass. it run normal and at center desktop when run but when click fullsreen it not
and fullscreen:
    private function init():void {
                fullScreenState = stage.displayState;
            private function btn_click(evt:MouseEvent):void {
                if (btn.selected) {
                    fullScreenState = StageDisplayState.FULL_SCREEN;
                } else     {
                    fullScreenState = StageDisplayState.NORMAL;
                try {
                    stage.displayState = fullScreenState;
                } catch (any:*) {
and button:
<s:ToggleButton id="btn"            
                        click="btn_click(event);"
                        width.trangchu="121" x.trangchu="401" y.trangchu="-27" height.trangchu="95" />
Can u help me please?

Answer 1

I don't know how to fix your problem, but just wanted to say
that I wholeheartedly agree with kglad.
I am working on a project now that needs to have a custom
scroll bar that I can incorporate with dynamic text fields that
need to be scrolled.
Four days ago, I decided to save some time and just use and
modify the UIScrollBar Component.
ALL SORTS OF LITTLE BUGS EVERYWERE.
After messing with it for an entire weekend, I decided to
just bite the bullet and write my own scrollbar class.
Here is what happened for me when I decided to write my own
class.
own class --------------------vs------------------- component
took 4 hours ------------------------- took 3 days until quit
3 mc's in the library to modify if you want
------------------------ I don't even want to count the
to change the look --------------------------- amout of mcs u
gotta change
can change width of scrollbar on the fly -------------------
can't change width of a vertical sb
added an autoscroll function that starts
------------------------------ no such function
scrolling down slowly upon page load
increase file size by a few kilobytes ---------------------
increase filesize by like 30kb
NO BUGS -------------------- BUGS EVERYWERE.
Lesson I had to learn: Components waste more time than I did
on my World of Warcraft phase.
They are good for designers who have limited scripting
knowledge, just be aware that they can be very buggy. There are
lots of third party developers that sell menu components and the
like. You may want to look in that direction if you absolutely must
use components and the included ones aren't working for you.