Calculate pixel width of custom Actionscript component

i'm still relatively new flash builder , flex, didn't think particular situation have me stumped this.

 

i've created custom menu.mxml component , in there i'm reading bunch of menu items out of external xml file , creating labels in actionscript in "for" loop. i've done before, in case labels need right-aligned along curve. don't want hard code x-positions, since changing simple font size throw things out. want take x value of point on curve , subtract width of label. simple enough, darn width of label returns 0. assume has label not yet having actual width straight after creating in actionscript?

 

i though onto overiding updatedisplaylist() , reading label width in there, still getting 0 width.

 

here's function draws menu (sitting inside cdata) - it's triggered creationcomplete event:

 

private function show():void

{

     var numbuttons:int;

     var menuitem:sollabel;

     var mgroup:group = new group();

 

     var xpos:array = new array(410, 468, 475, 492, 411,355, 383, 374, 328, 329, 307, 352, 385);

 

     menuitems = new array();

     numbuttons = mac.length;

     (var i:uint = 0; < numbuttons; i++)

     {

          menuitem = new sollabel();

          menuitem.text = mac.getitemat(i).name;

          menuitem.setstyle("color", 0x666666);

          menuitem.setstyle("fontsize", "16");

          menuitem.x = xpos[i] - menuitem.width;

          menuitem.y = menuspacing * i;

          mgroup.addelement(menuitem);

          menuitems.push(menuitem);

     }

     addelement(mgroup);

}

 

sollabel mxml label component uses default font defined in main css (so don't have embed more fonts in actionscript).

 

i suppose menuitem.width (in pixels) doesn't have value yet, @ point have value can position label before drawn on screen?

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